Posted by Eve on Sunday, August 31, 2008 at 6:37pm.
Hello. It's the beginning of the school year, and I've quite forgotten what I learned in PreAlgebra...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?

Algebra  Eve, Sunday, August 31, 2008 at 6:42pm
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(2bc)
?
Does evaluate just mean...Answer?

Algebra  Eve, Sunday, August 31, 2008 at 6:57pm
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.

Algebra  bobpursley, Sunday, August 31, 2008 at 7:29pm
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:
364 then the subtract.
This will be a quite a different answer from the second.
Yes, on the last, it means evaluate.

Algebra  Eve, Monday, September 1, 2008 at 1:05pm
Alright. I apologize for my rudeness. Thank you.

Algebra  misty, Tuesday, November 29, 2011 at 4:46pm
15 n when n=9
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