- 0.6 х - (1.5 - 2х) =3 ( -0.1 - 0.2х)
-0.6x-(1.5-2x) = 3(-0.1-0.2x)= = -0.6x-1.5+2x = -0.3-0.6x= = -0.6x+2x+0.6x = -0.3+1.5= = 2x = 1.2= = x = 1.2 / 2= = x = 0.6