Answer: m = 2
Explanation:
so the value of m is 2
Here's the step, first move 2m to left side then move 10 and -7 to the left side.
then we get 4m+2m = 15-10+7
finish things (addition and subtraction)
Then you get 6m = 12
m = 12/6, move 6 to divide 12 then you get m = 2.