Question

8m + 7 = 5m +16 what is this answer

Answer 1

8m+7 =5m+16
subtract 5m from both sides
3m + 7 = 16
subtract 7 from both sides
3m = 9
divide by 3 both sides
m=3 
Remember to always reverse the ops.

Answer 2

M equals 3.
That's your answer