Question

Решите уравнения
1)8(х-3)= 2х
2)2(у+5)= 3(у+4)+6
3)-5(3-х)-(4х+22)= -6(2х-1)
С решением

Answer 1

Ответ:

Пошаговое объяснение:

1)

8х - 24 = 2х

8х - 2х = 24

6х = 24

х = 24 : 6

х = 4

2)

2у + 10 = 3у + 12 + 6

2у - 3у = 12 + 6 - 10

-у = 8

у = -8

3)

-15 + 5х - 4х - 22 = -12х + 6

5х - 4х + 12х = 6 + 15 + 22

13х = 43

х = 43 : 13

х = 43/13

х = 3. 4/13

Answer 2

$1)8(x-3)= 2x \\ 8x - 24 = 2x \\ 8x - 2x = 24 \\ 6x = 24 \\ x = 24 \div 6 \\ x = 4 \\ \\ 2)2(y+5)= 3(y+4)+6 \\ 2y + 10 = 3y + 12 + 6 \\ 2y + 10 = 3y + 18 \\ 2y - 3y = 18 - 10 \\ - y = 8 \\ y = - 8 \\ \\ 3)-5(3-x)-(4x+22)= -6(2x-1) \\ - 15 + 5x - 4x - 22 = - 12x + 6 \\ - 37 + x = - 12x + 6 \\ x + 12x = 6 + 37 \\ 13x = 43 \\ x = \frac{43}{13} = 3 \frac{4}{13}$