Решите упав. 2(6х+1,85)-0,7=1,3х
2(6x+1.85)-0.7=1.3x 12x+3.7-0.7=1.3x 12x+3=1.3x 12x-1.3x=-3 10.7x=-3 x=-3/10.7≈-0.28