Решите уравнения:

1). 2 (x+2) - 4 (x-3) = 5x + 9

2). 2 (х-3) - 4 (x+1) = 5x - 38

3). 4/7x + 1 3/7 = 6/7x - 5 5/7

1. (2x+4) - (4x-12) = 5x+9

2x+4x-5x=9+12-4

x=18

2. (2x-6) - (4x+4) = 5x-38

2x+4x-5x=-38+6-4

x=-36

3. 4/7x - 6/7x=-5 5/7 - 1 3/7

-2/7x=4 2/7/-2/7

x=4

1) 2 (x+2) - 4 (x-3) = 5x + 9

2x + 4 - 4x + 12 = 5x + 9

2x - 4x - 5x = 9 - 4 - 12

-7x = - 7

x = 1

2) 2 (x-3) - 4 (x+1) = 5x - 38

2x - 6 - 4x - 4 = 5x - 38

2x - 4x - 5x = - 38 + 6 + 4

-7x = - 28

x = 4

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

4/7x - 6/7x = - 5 5/7 - 1 3/7

-2/7x = - 7 1/7

x = 25