решите уравнение 2)4)6)8)9

2.
x = 1,96
x1 = +1,96 = 1,4;
x2 = -1,96 = 1,4;

4.
x = 37
x1 = +37;
x2 = -37;

6.
3x = 48 : 3
x = 16
x1 = +16 = +4;
x2 = -16 = -4;

8.
3,24 - x = 0
-x = -3,24 : (-1)
x = 3,24
x1 = +3,24 = +1,8; 
x2 = -3,24 = -1,8;

9.
2y - 2,42 = 0
2y = 2,42 : 2
y = 1,21
y1 = +1,21 = +1,1;
y2 = -1,21 = -1,1;