решите уравнение 1)0,4(x-3)-1,6=5(0,1x-0,5)
                                 2)1,5(2x-5)+2x=5(05x-1,5)-10
                                 3)2/3(1 1/2x+3/5)-4/5(5/12x-1/2)=1 3/5
помогите решить 6 класс

0.4 x - 1.2 - 1.6 = 0.5x - 2.50.4x - 0.5x = - 2.5 + 2.8- 0.1 x = 0.3x = -33x - 7.5 + 2x = 2.5 x - 7.5 - 103x - 2.5x +2x= -17.5 +7.52.5x = -10x= - 10 : 2,5х = -4х +2/5 - 4/12 х + 4/10 = 8/58/12 х = 8/5 -2/5 -4/108/12 х = 8/10х = 12/10 = 1  2/10 = 1 1/5