Which procedure justifies whether -3x(5-4)+3(x-6) is equivalent to -12x-6?
the expressions are not equivalent because -3(2)(5-4)+3(2-6)=-18 and -12(2)-6=-30
the expressions are not equivalent because -3(2)(5-4)+ 3(2-6)=-18 and -12(3)- 6 =-42.
the expressions are equivalent because -3(2)(5-4)+3(2-6)=-18 and -12(-2)-6 = 18
the expressions are equivalent because -3(2)(5-4)+3(2-6)=-18 and -12(1)-6=-18
save and exit