2. -2х = 12 + х;
3. 3х – 2 = 5х – 4;
4. 0,1х – 3 = 9 + 0,3х;
5. – (3х – 2) = - х;
6. 3(х + 2) = 2(х -1);
7. -5(3 – х) = 6(х + 1);
8. 4(0,5х – 3) – 6(0,3х – 4) = 12,24;

2. -2х = 12 + х;

-2х-х=12

-3х=12

х=-4

3. 3х – 2 = 5х – 4;

3х-5х=-4+2

-2х=-2

х=1

4. 0,1х – 3 = 9 + 0,3х;

0,1х-0,3х=9+3

-0,2х=12

х=-60

5. – (3х – 2) = - х;

-3х+2=-х

-3х+х=-2

-2х=2

х=-1

6. 3(х + 2) = 2(х -1);

3х+6=2х-2

3х-2х=-2-6

х=-8

7. -5(3 – х) = 6(х + 1);

-15+5х=6х+6

5х-6х=6+16

-х=22

х=-22

8. 4(0,5х – 3) – 6(0,3х – 4) = 12,24;

2х-12-1,8х+24=12,24

0,2х=12,24+12-24

0,2х=0,24

х=12