Question

Solve A = a+b/2 for b

Answer 1

A = a +b/2
A -a =b/2
2(A-a) = b

Answer 2

Explanation:

I'm not sure if the right side is
`(a + b)/(2)` or
`a + (b)/(2)`, so I'll provide an answer for both:

`A = (a + b)/(2)`

`2A = a + b`

`2A - a = b`

`A = a + (b)/(2)`

`A - a = (b)/(2)`

`2(A - a) = b`

`2A - 2a = b`