the answer is m= -3
distribute the -2 then solve
m = -3
3-2*(9+2*m)-(m)=0
Step One :
(3 - 2 • (2m + 9)) - m = 0
Step Two: None.
Pulling them out like terms.
-5m - 15 = -5 • (m + 3)
Step Three:
-5 • (m + 3) = 0
