solve for n. -7 + 7n = 9n + 9 n =

Explanation:

Step1: Move variable terms to one - side

Subtract (7n) from both sides: (-7+7n - 7n=9n + 9-7n), which simplifies to (-7 = 2n+9).

Step2: Move constant terms to one - side

Subtract 9 from both sides: (-7-9=2n + 9-9), resulting in (-16 = 2n).

Step3: Solve for (n)

Divide both sides by 2: (\frac{-16}{2}=\frac{2n}{2}), so (n=-8).

Answer:

(-8)