## Algebra 1

$I : \frac{c}{(a + b)}$
The origional equation is ax + bx = c. In order to solve for x, we can simplify it into x (a + b) = c To get x on one side, we need to divide (a+b) from both sides So, now we get x = $\frac{c}{(a + b)}$ The answer choice is $I$.