Répondre :
je crois que c :
3.2(4x-3.1)=3.58 - 2.2x
12.8x - 9.92 = 3.58 - 2.2x
12.8x + 2.2x = 3.58 + 9.92
15x = 13.5
x = 13.5/15
x = 0.9
3.2(4x-3.1)=3.58 - 2.2x
12.8x - 9.92 = 3.58 - 2.2x
12.8x + 2.2x = 3.58 + 9.92
15x = 13.5
x = 13.5/15
x = 0.9