Sagot :
Bonjour,
Résoudre les équations:
8x - 3 = 5x
8x - 3 - 8x = 5x - 8x
-3 = -3x
3x = 3
x = 3/3
x = 1
5x + 15 = 55
5x + 15 - 15 = 55 - 15
5x = 40
x = 40/5
x = 8
3x + 2 = x + 6
3x + 2 - 2 = x + 6 - 2
3x = x + 4
3x - x = x + 4 - x
2x = 4
x = 4/2
x = 2
Bonne journée