Bonsoir,
u0 = 3
u1 = -2 + (-2/3)
u1 = -2/1 - 2/3
u1 = -6/3 - 2/3
u1 = -8/3
u2 = -2 + (-2/(-8/3)) diviser par un nombre, c'est multiplier par son inverse
u2 = -2 + (-2 * (-3/8))
u2 = -2 + 6/8
u2 = -2 + 3/4
u2 = -2/1 + 3/4
u2 = -8/4 + 3/4
u2 = -5/4
u3 = -2 + (-2/(-5/4))
u3 = -2 + (-2 * (-4/5))
u3 = -2 + 8/5
u3 = -2/1 + 8/5
u3 = -10/5 + 8/5
u3 = -2/5
