Question

**LOOK AT PHOTO** Whats the answer and what are the steps?

Answer 1

`a=2K-b`

Explanation:

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

Switch sides:

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

Multiply both sides by 2:

`(2\left(a+b\right))/(2)=2K`

`a+b=2K`

Subtract b from both sides:

`a+b-b=2K-b`

`a=2K-b`