# How do you solve for z in a = x+y+z/3?

##### 1 Answer
Apr 8, 2015

The answer is $z = 3 \left(a - x - y\right)$.

Beginning Equation:

$a = x + y + \frac{z}{3}$

First multiply both sides of the equation by 3.

$3 a = 3 x + 3 y + z$

Subract 3x and 3y from both sides.

$3 a - 3 x - 3 y = z$

Factor out the 3.

$3 \left(a - x - y\right) = z$