Question

-6(0,5х-1,5)-4,5х-8 при х = 2/3

Answer 1

-6(0,5х-1,5)-4,5х-8=-3х+9-4.5х-8=1-7.5х

при х = 2/3 1-7.5х=1-7.5*2/3=1-5=-4