Solve for b.

A=(a+b+c)/3

A.) 3A - a - c = b
B.) -c / 3 = b
C.) A - c / 3 = b
C.) -3 - c = b

Question

Solve for b. 

A=(a+b+c)/3

 A.) 3A - a - c = b
 B.) -c / 3 = b
 C.) A - c / 3 = b
 C.) -3 - c = b

anonymous · Answer

First you would want to multiply both sides by 3 to get a straight equation. 
So 3A = a+b+c
Then you do subtraction to both sides to get b by itself. 
What do you think the answer is from there?

anonymous · Answer

A? @PsychoTink

anonymous · Answer

wait no it's the last one.

anonymous · Answer

You were right with a. I'm assuming based on the capitalization differences that A and a are different. But it's a bad question that it would use the same variables like that.