SOLUTION: can you help me understand what to do with these equations especially with the brackets? 39. 2y-3(y+1)=-(5y+3)+y 41. 2[3z-5(2z-3)]=3z-4 43. -8m-[2(11-2m)+4]=9m

Question 55743: can you help me understand what to do with these equations especially with the brackets?
39. 2y-3(y+1)=-(5y+3)+y
41. 2[3z-5(2z-3)]=3z-4
43. -8m-[2(11-2m)+4]=9m
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
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
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