Question

-9 = -9(t + 1)

Explanation:

Step1: Divide both sides by -9

$\frac{-9}{-9}=\frac{-9(t + 1)}{-9}$

Simplify both sides: $1=t + 1$

Step2: Subtract 1 from both sides

$1-1=t + 1-1$

Simplify: $0=t$ or $t = 0$

Answer:

$t = 0$