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b)2(x+1)-3(x-1)=2x+2-3x+3=-x+6
c)-3(y-2)+4(y+2)=-3y+6+4y+2=y+8
d)5(x-y-1)-4(x+2)=5x-5y-5-4x-8=x-5y-13
e)2(3a+b)-2(a-b)=6a+2b-2a+2b=4a+4b
f)-1/2x(4x-4)-2x=-2x+2-2x=-4x+2