Question

Помогите решить уравнение 7 класс.
9.6-(2.6-х)=4
1.7-0.6у=0.3-0.4у
17-4х=5-6х
2,8-3,2х=-4,8-5,1х
0.2(5х-2)=0.3(2х-1)-0.9

Answer 1

1)9.6-(2.6-x)=4 9.6-2.6+x=4 7+x=4 X=4-7=-3 2)1.7-0.6y=0.3-0.4y 0.4y-0.6y=0.3-1.7 -0.2y=-1.4 y=7 3)17-4x=5-6x 6x-4x=5-17 2x=-12 x=-6 4)2.8-3.2x=-4.8-5.1x 5.1x-3.2x=-4.8-2.8 1.9x=-7.6 x=-4 5)0.2(5x-2)=0.3(2x-1)-0.9 x-0.4=0.6x-0.3-0.9 x-0.6x=0.4-0.3-0.9 0.4x=-0.8 x=-2