0,4 (3х+1)=5,6-3 (2-0,4х)

0, 4 (3х+1)=5, 6-3 (2-0, 4х) 1, 2х+0, 4=5, 6-6+1, 2х 1, 2х-1, 2х=-0, 4+5, 6-6 х=-0.8