Question

solve for u.
7u - 4u = 12
simplify your answer as much as possible.

Explanation:

Step1: Combine like terms

$7u - 4u = 3u$, so the equation becomes $3u = 12$

Step2: Isolate $u$ by dividing by 3

$\frac{3u}{3} = \frac{12}{3}$

Answer:

$u = 4$