2.2-0.6х=8.8
-0.6х=8.8-2.2
-0.6х=6.6
-х=6.6:0.6
-х=11
х=-11
А) -z-3z=4
-4z=4
z = -1
b) y-4y = 1
-3y = 1
y = -1/3
5x-5+3x-4x = 4x-5
2a-15-a+6 = a - 9
1.5a+a+2.5a = 5a
6y +8 +6y = 12y+8
10,12,13,14,15,16,17,18,19,20,21,23,24,25,26,27,28,29,30,31,32,34,35,36,37,38,39,40,41,42,43 этого хватит?