-x-2+3(x-3)=3(4-x)-3 уравнение

- x - 2 + 3 * (x - 3) = 3 * (4 - x) - 3;

- х - 2 + 3х - 9 = (12 - 3х) - 3;

- х - 2 + 3х - 9 = 12 - 3х - 3;

2х - 11 = 9 - 3х;

2х + 3х = 9 + 11;

5х = 20;

х = 20 : 5;

х = 4;

- 4 - 2 + 3 * (4 - 3) = 3 * (4 - 4) - 3;

- 6 + 12 - 9 = 12 - 12 - 3;

- 15 + 12 = - 3;

- 3 = - 3.