Sagot :
5x + 15 = 3 + 2x - 6
5x - 2x = -15 + 3 - 6
3x = -21 + 3
3x = -18
x = -18/3
x = -6
5x - 2x = -15 + 3 - 6
3x = -21 + 3
3x = -18
x = -18/3
x = -6
Bonsoir,
Résoudre l'équation:
5(x+3)=3+(2x-6)
5x+15= 3+2x-6
5x+15= 2x-3
5x-2x= -3-15
3x= -18
x= -18/3
x= -6
S= { -6 }