5-5/1+8*7/7*8-4+4(9^(18-5))=?

10,167,463,313,313
10,167,463,313,376

Are actually both correct.

8*7/7*8 can be correctly interpreted as both 64 and 1. Just depends on if you consider it an in-line division symbol or 8*7 OVER 7*8

in this instance you go from left to right.(( 8*7) / 7)* 8

if you have multiplication and division you go from left to right... same with addition and subtraction.

Generally true, but the / symbol is mathematically ambiguous:
Similarly, there can be ambiguity in the use of the slash ('/') symbol... For example, the manuscript submission instructions for the Physical Review journals state that multiplication is of higher precedence than division with a slash. (source "Physical Review Style and Notation Guide". American Physical Society. Section IV–E–2. Retrieved 5 August 2012.)

well, I love you if you are right, because if you are, then it means I'm not stupid and don't have to rely entirely on my looks to get by. :flowerforyou:

I am actually surprised that no one treated it as:

5-5/1+8*7
____________
7*8-4+4(9^(18-5))

And came up with

56
___
10,167,463,313,368

10,167,463,313,313
10,167,463,313,376

Are actually both correct.

8*7/7*8 can be correctly interpreted as both 64 and 1. Just depends on if you consider it an in-line division symbol or 8*7 OVER 7*8

It's arithmetic there is no interpretation only followed rules.

/ isn't an arithmetic symbol. it's a representation of either a division sign or a fraction on computers.

ETA: There is no Peter, only Zuul.

10,167,463,313,313
10,167,463,313,376

Are actually both correct.

8*7/7*8 can be correctly interpreted as both 64 and 1. Just depends on if you consider it an in-line division symbol or 8*7 OVER 7*8

I am guessing you are early 40s/late 30s? There was a brief time where the order of operations was taught improperly in many areas.

The standing rule is PEDMAS Left to right, and the intent must be explicit brackets and parenthesis.

True, but the / isn't really a mathematical symbol .. so it's still open to interpretation.

This is one of those problems where different brands of calculators will give you different answers, depending on how they interpret /

This is not a calculator, this website is a computer based platform, so "/" will always mean division this isn't open for debate, it is an agreed upon standard.

10,167,463,313,313
10,167,463,313,376

Are actually both correct.

8*7/7*8 can be correctly interpreted as both 64 and 1. Just depends on if you consider it an in-line division symbol or 8*7 OVER 7*8

It's arithmetic there is no interpretation only followed rules.

/ isn't an arithmetic symbol. it's a representation of either a division sign or a fraction on computers.

Technically a division sign and a fraction sign are the same. One-half = 1 divided by 2 = 50% = 0.5

10,167,463,313,313
10,167,463,313,376

Are actually both correct.

8*7/7*8 can be correctly interpreted as both 64 and 1. Just depends on if you consider it an in-line division symbol or 8*7 OVER 7*8

I am guessing you are early 40s/late 30s? There was a brief time where the order of operations was taught improperly in many areas.

The standing rule is PEDMAS Left to right, and the intent must be explicit brackets and parenthesis.

True, but the / isn't really a mathematical symbol .. so it's still open to interpretation.

This is one of those problems where different brands of calculators will give you different answers, depending on how they interpret /

This is not a calculator, this website is a computer based platform, so "/" will always mean division this isn't open for debate, it is an agreed upon standard.

Or ... as I posted previously ..

Similarly, there can be ambiguity in the use of the slash ('/') symbol... For example, the manuscript submission instructions for the Physical Review journals state that multiplication is of higher precedence than division with a slash. (source "Physical Review Style and Notation Guide". American Physical Society. Section IV–E–2. Retrieved 5 August 2012.)

It absolutely is open to debate.

10,167,463,313,313
10,167,463,313,376

Are actually both correct.

8*7/7*8 can be correctly interpreted as both 64 and 1. Just depends on if you consider it an in-line division symbol or 8*7 OVER 7*8

It's arithmetic there is no interpretation only followed rules.

/ isn't an arithmetic symbol. it's a representation of either a division sign or a fraction on computers.

ETA: There is no Peter, only Zuul.

I mean I can go to France and demand that the police speak to me in Chinese but that would not make sense. We are on computers so we speak that language

Also, the Gatekeeper was nice for speaking English and not the demon language, because they possessed an English speaking host. Which is like speaking calculator while possessing a computer.

10,167,463,313,313
10,167,463,313,376

Are actually both correct.

8*7/7*8 can be correctly interpreted as both 64 and 1. Just depends on if you consider it an in-line division symbol or 8*7 OVER 7*8

I am guessing you are early 40s/late 30s? There was a brief time where the order of operations was taught improperly in many areas.

The standing rule is PEDMAS Left to right, and the intent must be explicit brackets and parenthesis.

True, but the / isn't really a mathematical symbol .. so it's still open to interpretation.

This is one of those problems where different brands of calculators will give you different answers, depending on how they interpret /

This is not a calculator, this website is a computer based platform, so "/" will always mean division this isn't open for debate, it is an agreed upon standard.

Or ... as I posted previously ..

Similarly, there can be ambiguity in the use of the slash ('/') symbol... For example, the manuscript submission instructions for the Physical Review journals state that multiplication is of higher precedence than division with a slash. (source "Physical Review Style and Notation Guide". American Physical Society. Section IV–E–2. Retrieved 5 August 2012.)

It absolutely is open to debate.

I mean some scientists still day the world is 6000 years old with our understanding of time. So they can technically debate that fact.

10,167,463,313,313
10,167,463,313,376

Are actually both correct.

8*7/7*8 can be correctly interpreted as both 64 and 1. Just depends on if you consider it an in-line division symbol or 8*7 OVER 7*8

I am guessing you are early 40s/late 30s? There was a brief time where the order of operations was taught improperly in many areas.

The standing rule is PEDMAS Left to right, and the intent must be explicit brackets and parenthesis.

True, but the / isn't really a mathematical symbol .. so it's still open to interpretation.

This is one of those problems where different brands of calculators will give you different answers, depending on how they interpret /

This is not a calculator, this website is a computer based platform, so "/" will always mean division this isn't open for debate, it is an agreed upon standard.

Or ... as I posted previously ..

Similarly, there can be ambiguity in the use of the slash ('/') symbol... For example, the manuscript submission instructions for the Physical Review journals state that multiplication is of higher precedence than division with a slash. (source "Physical Review Style and Notation Guide". American Physical Society. Section IV–E–2. Retrieved 5 August 2012.)

It absolutely is open to debate.

Isn't that just explaining that the order of PEMDAS puts the M before the D?





(before the D :laugh: )

Depends on the interpretation of the order of operations too. Multiplication, THEN division .. or multiplication and division in a straight line from left to right.

Well following order of operations, i.e., PEMDAS, parentheses outrank exponents, which outrank multiplication and division (but multiplication and division are at the same rank), and these two outrank addition and subtraction (which are together on the bottom rank). When you have a bunch of operations of the same rank, you just operate from left to right.

Therefore it follows that you would operate the middle as ((8*7)/7)*8

10,167,463,313,313
10,167,463,313,376

Are actually both correct.

8*7/7*8 can be correctly interpreted as both 64 and 1. Just depends on if you consider it an in-line division symbol or 8*7 OVER 7*8

I am guessing you are early 40s/late 30s? There was a brief time where the order of operations was taught improperly in many areas.

The standing rule is PEDMAS Left to right, and the intent must be explicit brackets and parenthesis.

True, but the / isn't really a mathematical symbol .. so it's still open to interpretation.

This is one of those problems where different brands of calculators will give you different answers, depending on how they interpret /

This is not a calculator, this website is a computer based platform, so "/" will always mean division this isn't open for debate, it is an agreed upon standard.

Or ... as I posted previously ..

Similarly, there can be ambiguity in the use of the slash ('/') symbol... For example, the manuscript submission instructions for the Physical Review journals state that multiplication is of higher precedence than division with a slash. (source "Physical Review Style and Notation Guide". American Physical Society. Section IV–E–2. Retrieved 5 August 2012.)

It absolutely is open to debate.

Isn't that just explaining that the order of PEMDAS puts the M before the D?





(before the D :laugh: )

Depends on the interpretation of the order of operations too. Multiplication, THEN division .. or multiplication and division in a straight line from left to right.

AND not THEN is the rule. Left to right.

As any math instructor would tell you - "screw you and your order of operations - USE BRACKETS"

AND not THEN is the rule. Left to right.

True.

Used to be that implied multiplication (ie. 2x) had higher precedence, but that's changing now too. Nowadays 2x/2x=x^2, when it used to = 1

2 * x / 2 * x

= (2x) / 2 * x
= x * x

This wasn't making sense. Then i see the problem 2x = x + x.

(x + x) / (x + x) = 1

Edited for derp.

But who was clear notation?

My care levels have normalized.