Question

Solve: 2a+2b=c for b. Help me solve this, and thanks if you try.

Answer 1

2a+2b=c make b the subject
(-2a) from both sides
2b=c-2a
Divide by 2 both sides
b=(c-2a)/2

Answer 2

`2a+2b=c \\ 2b=c-2a \\ b=(c-2a)/(2) = (c)/(2) - (2a)/(2)=\underline{\underline{(1)/(2)c-a}}`