Réponse :
3x+2=5
3x+2 - 2 = 5 -2
3x = 3
3x / 3 = 3 / 3
x = 1
7=3-2x
7 -3 = 3-2x -3
4 = -2x
2x = 4
2x / 2 = 4 / 2
x = 2
6x=2x+3
6x - 2x = 2x + 3 - 2x
4x = 3
4x / 4 = 3 / 4
x = 3 / 4
4x-5=-7x-2
4x-5 +5 = -7x-2 +5
4x = -7x +3
4x +7x = -7x +3 +7x
11x = 3
11x / 11 = 3 / 11
x = 3 / 11
Explications étape par étape
