Bonjour
A= 3(2x-1) - 5(1-x)
A = (6x-3) - (5 -5x)
A = 6x-3 - 5 +5x
A = 11x -8
B= (-2x+1)(3x+4)
B = -6x² -8x +3x +4
B = -6x² -5x +4
Résoudre les équations suivantes :
3x-4 = -2x+7
3x +2x = 7 +4
5x = 11
x = 11/5
x/4 - 1/3 = 2 ( / = Barre de fraction )
3x/12 - 4/12 = 24/12
3x - 4 = 24
3x = 24 +4
3x = 28
x = 28/3
