bonsoir, pouviez-vous m'aider merci bonne soirée

bonsoir

a) 2x + 3 = -7

2x+3-3 = -7-3

2x = -10

2x /2 = - 10/2

x = -5

b) -3x+7 = 10

-3x+7-7 = 10-7

-3x = 3

-3x /-3 = 3/-3

x = 0

c) 5-2x = 25

5-5-2x = 25-5

2x = 20

2x/2 = 20/2

x = 10

d) 1-3x = 13

1-1-3x = 13-1

-3x = 12

-3x /-3 = 12/-3

x = 9

e) 8 = 6-2x

6-2x = 8

6-6-2x = 8-6

-2x = 2

2x/-2 = 2/-2

x = 0

f) 25 = 7+4x

7+4x = 25

7-7+4x = 25-7

4x = 18

4x/4 = 18/4

x = 4.5

voila j'espère t'avoir bien aider ;)