Answer
$x = \frac{c}{a+b}$
Work Step by Step
Our goal is to isolate x. To accomplish this we will first factor out x:
ax + bx = c
x(a+b) = c
We will then isolate x by dividing both sides by (a+b):
x(a+b) = c
$x = \frac{c}{a+b}$
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