Question

Срочно пжпжжп 50?балов даю

Answer 1

Объяснение:

1)

(3х - 1)/6 - х/3 = (5 - 2х)/9 | * 18

3 * (3х - 1) - 6х = 2 * (5 - 2х)

9х - 3 - 6х = 10 - 4х

3х - 3 = 10 - 4х

3х + 4х = 10 + 3

7х = 13

х = 13 : 7

х = 13/7

х = 1 6/7

2)

(3х + 1)/2 - 5х/4 = (3 - 2х)/3 | * 12

6 * (3х + 1) - 3*5х = 4 * (3 - 2х)

18х + 6 - 15х = 12 - 8х

3х + 6 = 12 - 8х

3х + 8х = 12 - 6

11х = 6

х = 6 : 11

х = 6/11

3)

(х + 5)/8 - (1 + х)/2 = (2х + 1)/3 | * 24

3 * (х + 5) - 12 * (1 + х) = 8 * (2х + 1)

3х + 15 - 12 - 12х = 16х + 8

-9х + 3 = 16х + 8

-9х - 16х = 8 - 3

-25х = 5

х = 5 : (-25)

х = -5/25

х = -1/5