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b)-8a
c)2x+2-3x+3=5x+5
d)x²-x-3x²+3x=-2x²+2
b)-6a²-2a=-12a-2=-10a
c)2(x+1)-3(x+1)=2x+1-3x+1=5x-2
d)x(x-1)-3(x²-x)=2x-1x-6x-3x=1x-3x
;D
akurat mam to z matmy ;p
a)5xy-x=5y
b)-6a²-2a=12a-2a=10a
c)2(x+1)-3(x+1)=2x+2-3x-3=-x-1
d)x(x-1)-3(x²-x)=x²-x-3x²+3x=-2x²+2x