Réponse:
5x-5×3-2×8-4x=20
5x-15-16-4x=20
×-31=20
x=20+31
x=51
Bonjour,
5(x-3)-2(8+2x)=4x5
5x-15 -16 -4x = 20
x -31 = 20
x = 20+31
x= 51