Решите пожалуйста уравнения: 1) 3х -5 = -4х - 6 2)

1) 3х -5 = -4х - 6 ;
3 * x + 4 * x = - 6 + 5 ;
7 * x = - 1 ;
x = - 1 / 7 ;

2) -2х +1 = 5х + 7 ;
- 2 * x - 5 * x = 7 - 1 ;
- 7 * x = 6 ;
x = 6 / ( - 7 ) ;
x = - 6 / 7 ;

3) -3х - 2 = -4х - 5;
- 3 * x + 4 * x = - 5 + 2 ;
x = - 3 ;

4) -3х +6 = -7х + 4 ;
- 3 * x + 7 * x = 4 - 6 ;
4 * x = - 2 ;
x = - 2 / 4 ;
x = - 1 / 2 ;
x = - 0.5 ;

5) -4х +2 - 6 =-5х -2+6х ;
- 4 * x - 4 = x - 2 ;
- 4 * x - x = - 2 + 4 ;
- 5 * x = 2 ;
x = - 2 / 5 ;

6) -4х +5х -(-15)= 4х + 12 - 4 ;
- 4 * x + 5 * x + 15 = 4 * x + 8 ;
x + 15 = 4 * x + 8 ;
x - 4 * x = 8 - 15 ;
5 * x = - 7 ;
x = - 7 / 5 ;

7) -3х +6х -(-4) - 2 = -4х -8 ;
- 3 * x + 6 * x + 4 - 2 = - 4 * x - 8 ;
3 * x + 2 = - 4 * x - 8 ;
3 * x + 4 * x = - 8 - 2 ;
7 * x = - 10 ;
x = - 10 / 7 ;

8) 2х -(-4х) + 12 - (-3) = -(-5) +х ;
2 * x + 4 * x + 12 + 3 = 5 + x ;
6 * x + 15 = 5+ x ;
6 * x - x = 5 - 15 ;
5 * x = - 10 ;
x = - 10 / 5 ;
x = - 2.