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Mathematics 8 Online
OpenStudy (anonymous):

Solve 20 -15 / -5

OpenStudy (anonymous):

I have the answer of 23, but not sure how they got it, can anyone help explain?

OpenStudy (anonymous):

According to order of operations which term do you need to solve first?

OpenStudy (anonymous):

I think it starts with 20 times -15

OpenStudy (anonymous):

I keep coming up with different numbers, not one is 23

OpenStudy (anonymous):

There is no times. you have 2 choices: a) 20 - 15 b) -15/-5 Which do you think should be done first?

OpenStudy (anonymous):

but when I do this I get 0. I did 20 - 15 = 5 then divides by 5 = 0 I have been trying this, I get 2, 5, and 0. I am really getting confused

OpenStudy (anonymous):

20 - 15 is incorrect. You have a subtraction and division. 20 -15 would be subtraction. -15 / -5 is division. According to order of operations (PEMDAS) what comes first subtraction or division?

OpenStudy (anonymous):

( Exponent, Multiply, division, add, subtract. So Subtract 20 -15 = 5 times -15 / -5 = -15

OpenStudy (anonymous):

Parenthesis, exponent, multiply, division, add, subtract. What comes first division or subtraction?

OpenStudy (anonymous):

division, so then it would be -5 divided by -15 = -20

OpenStudy (anonymous):

It would be - 15/-5 which is -15 divided by -5. What is -15/-5?

OpenStudy (anonymous):

-20

OpenStudy (anonymous):

You are doing -20 -5 (which is -20). However, this is -15 / -5. The forward slash " / " is division. So it is - 15 divided by - 5. What is -15 divided by -5?

OpenStudy (anonymous):

Ok, then the answer comes up to 5 / 5 which = 1. I keep getting wrong answers The problem to solve is 20 -15 / -5 showing the work. I am confused here

OpenStudy (anonymous):

It is not 5/5. It is -15/-5.

OpenStudy (anonymous):

-15 divided by -5 = -20 right

OpenStudy (anonymous):

No. -15 minus 5 is -20. Put into your calculator -15/-5

OpenStudy (anonymous):

I come up with -20.

OpenStudy (anonymous):

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