Решите уравнения 11+2х=55+3х;-15-3х=-7х+45;-3х-17=8х-105

Вычислим корешки уравнений.

1) 11 + 2 * х = 55 + 3 * х;

2 * x - 3 * x = 55  - 11;

x * (2 - 3) = 44;

x * (-1) = 44;

-1 * x = 44;

x = -44/1;

x = -44.

2) -15 - 3 * х = -7 * х + 45;

-3 * x + 7 * x = 45 + 15;

7 * x - 3 * x = 60;

x * (7 - 3) = 60;

4 * x = 60;

x = 60/4;

x = 15.

3) -3 * х - 17 = 8 * х - 105; 

-3 * x - 8 * x = -105 + 17; 

8 * x + 3 * x = 105 - 17; 

x * (8 + 3) = 88; 

11 * x = 88; 

x = 88/11; 

x = 8.