Question

Solve the equationshow your work9 + 12m = 6 + 15(m - 1)

Answer 1

Answer: m=6

Step-by-step explanation:

$9+12m=6+15\left(m-1\right)$

$6+15\left(m-1\right)=15m-9$

$9+12m=15m-9$

subtract 9 on both sides

$9+12m-9=15m-9-9$

$12m=15m-18$

subtract 15m on both sides

$12m-15m=15m-18-15m$

$-3m=-18$

divide by -3 on both sides

$\frac{-3m}{-3}=\frac{-18}{-3}$

since $\frac{-a}{-b}=\frac{a}{b}$

$\frac{-18}{-3}=6$

$m=6$