Question

solve for u.
-3u + 15u + 7 = 8u + 43
simplify your answer as much as possible.
u =

Explanation:

Step1: Combine like terms on left

$(-3u+15u)+7=8u+43$
$12u+7=8u+43$

Step2: Subtract $8u$ from both sides

$12u-8u+7=43$
$4u+7=43$

Step3: Subtract 7 from both sides

$4u=43-7$
$4u=36$

Step4: Divide by 4 to isolate $u$

$u=\frac{36}{4}$
$u=9$

Answer:

$u=9$