Solve this equation

[3GENCY]

It is an expression

 

[3TrueFans]

No you do it

 

[3GENCY]

And we are doing this after Gabe’s big shot?

 

[3GENCY]

No you do it

That is what my 7th graders say.

 

[Ms3r4ISU]

PEMDAS
Add
Divide
Then
Multiply

PEMDAS is
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction

 

[Farnsworth]

Where is the back of the CycloneFanatic book?

 

[herbicide]

I just did the google on it... I might be old but I'm glad I'm wrong versus being that old...

 

[AllInForISU]

8
-------
2(2+2)

At least thats how I 'read' it.

Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

8/2(2+2)
8/2*4
4*4
16

 

[3GENCY]

Is this the same expression?

 

[aeroclone]

It is a poorly defined expression leaving room for interpretation around the implied multiplication.

https://plus.maths.org/content/pemdas-paradox

 

[besserheimerphat]

How about you not give people ambiguous math problems? That's why people hate math-for-math's-sake. The answer is meaningless because it doesn't have real world implications. And if it did have real world implications, you'd need to write the arithmetic in a way that explicitly leads to the right answer. Otherwise it's just a random collection of operators that makes people think they don't understand math.

 

[simply1]

Making the Reddit rounds

 

[cyclones500]

The Empty Set.

(That's always my fall-back answer for math problems, when I'm uncertain )

 

[aeroclone]

Is this the same expression?

Bingo. For people who didn't do much math beyond algebra they are going to work the parenthesis then go left to right with multiplication based on order of operations.

For people who have done a lot of higher level math, they are going to view the implied multiplication as you have it here. Basically it acts like a second set of parenthesis putting everything after the division sign into the denomenator.

 

[cycloneG]

Is this the same expression?

Wouldn't that be written 8/(2(2+2))

 

[NorthCyd]

 

[AllInForISU]

It is a poorly defined expression leaving room for interpretation around the implied multiplication.

https://plus.maths.org/content/pemdas-paradox

If you were taught math correctly, it’s not up for debate.

 

[stormchaser2014]

I never learned the left to right thing, always multiplication first then division.

 

[Ms3r4ISU]

PEMDAS is
Parentheses (2+2) =4
Exponents
Multiplication 2 x 4 = 8
Division 8/8
Addition
Subtraction

Answer 1. L to r only comes into play when there is more than one of the same item, such as two sets of parentheses.

 

[AllInForISU]

Answer 1. L to r only comes into play when there is more than one of the same item, such as two sets of parentheses.
View attachment 107919

Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)

Multiplication and division are done in the same step, left to right.