Answer:
m = 2
Explanation:
First we must distribute on both sides of the equation. If we distribute the 5 on the left we should end up with,
-20m + 10 = -2(3 + 6m)
Then we can distribute the right side,
-20m + 10 = -6 - 12m
We want to move the m's to one side so let's move the -20m to the right by adding it to both sides.
-20m + 10 + 20m = -6 - 12m + 20m
This gives us,
10 = -6 + 8m
Finally we want to move the -6 over to the left by adding it to both sides.
10 + 6 = 8m
16 = 8m
From here we divide both sides by 8 to get m alone.
m = 2