# Math Help - equation help

1. ## equation help

The problem is:

A=1/2h(b + b'), solve for b.

I would know how to solve it, except for the b'. What is that and how do I solve the problem with it? Is it the same as b? I do not know. If someone could clear me up with this matter, I would be very thankful.

2. B prime would not be the same as b. I guess your question is to rearrange the expression making b the subject.

here is the answer so you can check

$b = \frac{1}{2hA} - b'$

3. Oh, I did not know that that symbol equalled prime. Thanks, that will come in handy.