Question

Hello. It's the beginning of the school year, and I've quite forgotten what I learned in Pre-Algebra...The question in the text book is this :

Simplify each pair of expressions.

1. 36 - 8 ÷ 2

(36 - 8) ÷ 2


There are several problems like the one above. Under the same set of directions, though, some problems look like this :

7. 3(9+2) - 8
__________

7

With only one problem.

So, what am I supposed to do?

Answer 1

And, once that's answered, the next set of directions don't make sense to me either.

Evaluate each expression for a = 3, b= 7, c = 4.

13. a(2b-c)

?

Does evaluate just mean...Answer?

Answer 2

I believe that I understand the directions, now. Thank you though. It'd odd - Jiskha homework help used to work so much more quickly, in past years. I wonder what happened. Anyways, thanks again, and good luck with the other questions.

Answer 3

This is a holiday weekend and many of our tutors are on vacation. Also the new hurricane has driven at least one of them out of his home.

Answer 4

Under the first two, do the operations in the correct order: Parentheisis, multiply, divide, add subtrract.

So on the first

36 - 8 ÷ 2, do the divide first:
36-4 then the subtract.

This will be a quite a different answer from the second.

Yes, on the last, it means evaluate.

Answer 5

Alright. I apologize for my rudeness. Thank you.

Answer 6

15- n when n=9