Question

solve for u.
-31 = 3u + 9 - 8u
simplify your answer as much as possible.
u =

Explanation:

Step1: Combine like terms

$-31 = (3u - 8u) + 9$
$-31 = -5u + 9$

Step2: Subtract 9 from both sides

$-31 - 9 = -5u$
$-40 = -5u$

Step3: Divide by -5 on both sides

$\frac{-40}{-5} = u$
$8 = u$

Answer:

$u=8$