Question

помогите паже очень надо через 5 мин надо сдать

Answer 1

$4(2 x+ 5) + x = 7x + 20 \\ 8x + 20 + x = 7x + 20 \\ 9x - 7x = 20 - 20 \\ 2x = 0 \\ x = 0$

$\frac{x - 11}{4} - \frac{2x}{5} = \frac{x - 3}{4} \: \: \: \: \: | \times 20 \\ 5(x - 11) - 4 \times 2x = 5(x - 3) \\ 5x - 55 - 8x = 5x - 15 \\ - 3x - 5x = - 15 + 55 \\ - 8x = 40 \\ x = 40 \div ( - 8) \\ x = - 5$

Answer 2

Пошаговое объяснение:

4(2х + 5) + х = 7х + 20

8х + 20 + х = 7х + 20

9х + 20 = 7х + 20

9х - 7х = 20 - 20

2х = 0

х = 0 : 2

х = 0

(х - 11)/4 - 2х/5 = (х - 3)/4 | * 20

5(х - 11) - 8х = 5(х - 3)

5х - 55 - 8х = 5х - 15

-3х - 55 = 5х - 15

-3х - 5х = -15 + 55

-8х = 40

х = 40 : (-8)

х = -5