Answer:
m=-3
Step-by-step explanation:
3-2(9+2m)=m
3-2(9)-2(2m)=m
3-18-4m=m
-15-4m=m
-15=m+4m
5m=-15
Divide by 5
5m/5=-15/5
m=-15/5
m=-3
To check if correct, subsitute m for -3 in the equation. And both sides of the equation must be equal
3-2(9+2m)=m
3-2(9+2(-3))=-3
3-2(9-6)=-3
3-2(3)=-3
3-6=-3
-3=-3
