Question

6класс помогите!!!!!​

Answer 1

9.

-3(1.2x-2)-(3-4.6x)+6(0.2x-1)=1.2x×(-3)-2×(-3)-3+4.6x+0.2x×6-1×6=-3.6x+6-3+4.6x+1.2х-6=+(4.6-3.6+1.2)x+(6-3-6)=2.2х-3

при х=-15/22

2.2×(-15/22)-3=-(11/5×15/22)-3=1.5-3=-1.5