Question 55743
KEY: YOU HANDLE BRACKETS [THE SAME AS PARENTICES ( )

2Y-3(Y+1)=-(5Y+3)+Y
2Y-3Y-3=-5Y-3+Y
2Y-3Y+5Y-Y=-3+3
3Y=0 
Y=0

2[3Z-5(2Z-3)]=3Z-4
2[3Z-10Z+15]=3Z-4
6Z-20Z+30=3Z-4
6Z-20Z-3Z=-4-30
17Z=-34
Z=-34/17 
Z=-2

-8M-[2(11-2M)+4]=9M
-8M-[22-4M)+4]=9M
-8M-22+4M-4=9M
-8M+4M-9M=22+4
-13M=26
M=26/-13
M=-2