Sagot :
Réponse:
bonsoir,
5x + 3 = 3x - 7
5x - 3x = -7 -3
2x = -10
x = -10 / 2
x = -5
12x - 5 = 7
12x = 7+5
12x = 12
x = 12/12
x = 1
8x - 2 = 2x + 10
8x -2x = 10 +2
6x = 12
x = 12/6
x = 2
15x - 6 = 0
15x = 6
x = 6/15
x = 2/5
Réponse:
bonsoir,
5x + 3 = 3x - 7
5x - 3x = -7 -3
2x = -10
x = -10 / 2
x = -5
12x - 5 = 7
12x = 7+5
12x = 12
x = 12/12
x = 1
8x - 2 = 2x + 10
8x -2x = 10 +2
6x = 12
x = 12/6
x = 2
15x - 6 = 0
15x = 6
x = 6/15
x = 2/5