Bonjour Quelqu'un peut m'expliquer comment on fait ? ​

Bonsoir

a. 13 + 3/2x = 1

3/2x = 1 - 13

3/2x = - 12

3x = - 24

x = - 24/3

x = - 8

b. 4x + 1/3 = 1/2x + 2

4x - 1/2x = 2 - 1/3

24/6x - 3/6x = 12/6 - 2/6

24x - 3x = 12 - 2

21x = 10

x = 10/21

c. 3/2x + 1/4 = 7/4

3/2x = 7/4 - 1/4

3/2x = 6/4

3/2x = 3/2

3x = 3

x = 3/3

x = 1

d. (x - 3) / 5 = 3/8

8x - 24 = 15

8x = 15 + 24

8x = 39

x = 39/8

e. (2x - 3) / 7 = (x - 1) / 3

6x - 9 = 7x - 7

6x - 7x = - 7 + 9

- x = 2

x = - 2.