Question

Solve the equation
show your work
9 + 12m = 6 + 15(m - 1)

Answer 1

Answer: m=6

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

`(-3m)/(-3)=(-18)/(-3)`

since
`(-a)/(-b)=(a)/(b)`

`(-18)/(-3)=6`

`m=6`