Sagot :
Bonsoir,
Résoudre les équations:
4x + 2 = 2x - 12
4x + 2 - 2 = 2x - 12 - 2
4x = 2x - 14
4x - 2x = 2x - 14 - 2x
2x = -14
x = -14/2 = -7
10x - 7 = 6x - 3
10x - 7 + 7 = 6x - 3 + 7
10x = 6x + 4
10x - 6x = 6x + 4 - 6x
4x = 4
x = 4/4 = 1
Bonne soirée.