1010. 1) 5 (x - 1) + 7 = 3 (x + 1) + 1

5x - 5 + 7 = 3x + 3 + 1

5x - 3x = 3 + 1 + 5 - 7

2x = 2

x = 1

2) 2 (x + 1) + 3 = 3 (x - 1) + 6

2x + 2 + 3 = 3x - 3 + 6

2x - 3x = -3 + 6 - 2 - 3

- x = -8

x = 8

3 и 4 не видно

1011. 1) 4 (x-3) - 3 (x + 2) = -19

4x - 12 - 3x - 6 = - 19

4x - 3x = -19 + 12 + 6

x = - 1

2) 2x + 1 + 3 (x - 2) = 14

2x + 1 + 3x - 6 = 14

2x + 3x = 14 - 1 + 6

5x = 19

x = 3,8

3 и 4 не видно

1012. 1) - 9 (2x - 7) + 17 (x - 1) = 0

- 18x + 63 + 17x - 17 = 0

- 18 x + 17x = - 63 + 17

-x = - 46

x = 46

2) -7 (2x - 3) + 5 (3x - 2) = 0

- 14x + 21 + 15 x - 10 = 0

- 14 x + 15 x = - 21 + 10

x = - 11

3 и 4 не видно

1013. 1) -8 (3x - 2) + 5 (5x - 3) = 0

-24x + 16 + 25x - 15 = 0

-24x + 25x = 15 - 16

x = -1

2) 5x + 6 - (3x - 4) = x - 3 - (2x - 4)

5x + 6 - 3x + 4 = x - 3 - 2x + 4

5x - 3x - x + 2x = -3 + 4 - 6 - 4

3x = -9

x = -9 : 3

x = - 3

3 и 4 не видно