Решите уравнения: 3x-2=43 6x-8=4x-2 8(x03)-2x=3x-12

Найдем корни уравнений.

1) 3 * x - 2 = 43; 

3 * x = 43 + 2;

3 * x = 45;

x = 45/3;

x = 15.

2) 6 * x - 8 = 4 * x - 2; 

6 * x - 4 * x = -2 + 8;

x * (6 - 4) = 8 - 2;

x * 2 = 6;

2 * x = 6;

x = 6/2;

x = 3.

3) 8 * (x + 3) - 2 * x = 3 * x - 12; 

8 * x + 8 * 3 - 2 * x = 3 * x - 12; 

8 * x + 24 - 2 * x = 3 * x - 12; 

6 * x + 24 = 3 * x - 12; 

6 * x - 3 * x = -12 - 24; 

3 * x = -36; 

x = -36/3; 

x = -12.