ПОмогите пжж алгебра завтра 1 уроком умоляю прошу помогите

1) 4x - 3x + 7 = 2x + x + 7

4x - 3x + 7 - 2x - x - 7 = 0

2x - 4x = 0

x - 2x = 0

x(x - 2) = 0

x = 0

x - 2 = 0

x = 2

Ответ : 0 ; 2

2) 10 - 3x = x + 10 - x

10 - 3x - x - 10 + x = 0

- 4x + x = 0

4x - x = 0

x(4x - 1) = 0

x = 0

4x - 1 = 0

4x = 1

x = 0,25

Ответ : 0 ; 0,25

3) (x + 3)(x - 4) = - 12

x - 4x + 3x - 12 + 12 = 0

x - x = 0

x(x - 1) = 0

x = 0

x - 1 = 0

x = 1

Ответ : 0 ; 1

4) x - 1 = 2(x - 3)

x - 1 = 2x - 6

x - 1 - 2x + 6 = 0

- x + 5 = 0

x - 5 = 0

(x - 5)(x + 5) = 0

x - 5 = 0

x = 5

x + 5 = 0

x = - 5

Ответ : - 5 ; 5

5) x + 6x = 0

x(x + 6) = 0

x = 0

x + 6 = 0

x = - 6

Ответ : - 6 ; 0

6) x - 49 = 0

(x - 7)(x + 7) = 0

x - 7 = 0

x = 7

x + 7 = 0

x = - 7

Ответ : - 7 ; 7