-4(2.5x-1.5)+5.5x-8 при x=-2/9

Question

-4(2.5x-1.5)+5.5x-8 при x=-2/9

Answer 1

-4(2.5x-1.5)+5.5x-8=-10х+6+5,5х-8=-4,5х-2Если х= -2,9, то -4,5*(-2/9)-2=1