M+4(2m-3)=3
distribute 4 to (2m-3)...and you get 8m-12
we have M+8m-12=3 now
so add 12 on both sides
and you have M+8m= 15
i'm assuming M and m are like terms so I add M+8m= 9m
we have 9m=15
then divide by 9 on both sides
and you get m= 15/9 or 1.6667
