Question

Дам 15 баллов помогите плиз​

Answer 1

$\frac{x-7}{2} -\frac{x+1}{3} = -3\\\frac{3(x-7)}{6}-\frac{2(x+1)}{6}= -3\\\frac{3x-21-2x-2}{6}=-3$

3x - 21 - 2x - 2 = - 18

x - 23 = - 18

x = 18 + 23

x = 5

Ответ: 5 .

(2x + 6)(7 - 4x) = (2 - x)(8x + 1) + 15

14x - 8$x^{2}$ + 42 - 24 x = 16x + 2 - 8$x^{2}$ - x + 15

14x + 42 - 24 x = 16x + 2 - x + 15

-10x + 42 = 15x + 17

-10x - 15x = 17 - 42

- 25 x = -25

x = 1

Ответ: 1 .