Answer:
m = -3/11 x
Explanation:
expand the brackets
12m + 36x = 18x - 54m
collect the m's on one side and the x's on the other
12m + 54m = 18x - 36x
add/ subtract
66m = -18x
divide both sides by 66
m = -18/66 x
simplify by dividing the numerator and denominator by 6
m = -3/11 x
Take it easy on your teacher. Its one of the hardest jobs in the world. Good Luck!