а) = -6y(2x+1):(-6y)=-(2x+1)
б)=(3ab^3-4a^2b^2)/(ab^2)=(ab^2(3b-4a))/ab^2=3b-4a
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а) = -6y(2x+1):(-6y)=-(2x+1)
б)=(3ab^3-4a^2b^2)/(ab^2)=(ab^2(3b-4a))/ab^2=3b-4a