Bonsoir, quelqu’un peut m aider svp 1- Résoudre les équation suivantes : a. x + 7 = 0 x + 7 = 2 i. -4-3x = 6-5x e. b. x 1 = 0 f. 3x - 9 = 2 j - 3+ 7x = 2 c. 2x

Salut ! Explications étape par étape :
a. • x + 7 = 0
x = -7
• x+7 = 2
x = 2-7
x = -5
i. • -4-3x = 6-5x
-4 = 6-5x+3x
-4-6 = -2x
-10 = -2x
-10/-2 = -2x/-2
x = 5
b. • x+1 = 0
x = -1
f. • 3x-9 = 2
3x = 2 + 9
3x = 11
3x/3 = 11/3
x = 11/3
j. • -3+7x = 2
7x = 5
7x/7 = 5/7
x = 5/7
c. • 2x + 4 = 0
2x = -4
2x/2 = -4/2
x = -2
g. • -6x + 2 = 9
-6x = 7
-6x/-6= 7/-6
x = 7/-6
k. • x+ 7 = 2x + 4
7 = 2x-x + 4
7-4= x
x = 3
d. 5x -3 +7x=0
5x+7x = 3
12x = 3
12x/12 = 3/12
x = 3/12 = 0,25
h. -12 + 8x = 1
8x = 1 + 12
8x/8 = 13/8
x = 13/8 = 1,625
1. 2x + 4 = 4x - 5
4+5 = 4x-2x
9 = 2x
2x/2 = 9/2
x = 9/2 = 4,5

En espérant t’avoir aider !