Bonjour,
Résoudre chaque équation.
a. 3 ÷ 4x = 5
4x = 3/5
x = 3/20
b. 4x – 3 = 11
4x = 11 + 3
x = 14/4
x = 7/2
c. 7 – 8x = 56
8x = 7 - 56
x = -49/8
d. 6x – 4 = 3x + 14
6x - 3x = 14 + 4
3x = 18
x = 18/3
x = 6
e. 9 – 2x = 11 + 4x
9 - 11 = 4x + 2x
-2 = 6x
x = -2/6
x = -1/3