-2(3х+1)+2(4-2х)-5(2-4х)
-6х-2+8-4х-10+20х=0 -6х-4х+20х=2-8+10 10х=4 х=0,4
-6x - 2 + 8 - 4x - 10 + 20x = (-6-4+20)x + (-2+8-10) = 10x - 4