Bonjour, Bonjour, j'ai besoin d'aide, merci Résoudre chaque équation. a. –2 + x = 5 b. x + 9 = 16 c. 6x = 15 d. –5x = 24 e. 4x + 3x = 49 f. –2x + 7x = 36

-2+x=5
1x − 2 = + 5
1x = 5 + 2
1x = 7
x = 7

x+9=16
1x + 9 = + 16
1x = 16 − 9
1x = 7
x = 7

6x=15
6x = + 15
6x = 15
6x = 15
x = 5/2
x = 2,5

-5x=24
-5x = + 24
-5x = 24
-5x = 24
x = -24/5
x = -4,8


4x+3x=49
7x = + 49
7x = 49
7x = 49
x = 7

-2x+7x=3
5x = + 3
5x = 3
5x = 3
x = 3/5
x = 0,6

Bonjour,

a. -2x + x = 5
1x = 5
x = 5
b. x + 9 = 16
x = 16 - 9
x = 7
c. 6x = 15
x = 15 ÷ 6 = 2,5
d. -5x = 24
-x = 24 ÷ (-5) = (-4,8)
e. 4x + 3x = 49
7x = 49
x = 49 ÷ 7
x = 7
f. -2x + 7x = 36
Je te laisse résoudre la dernière équation.