bonjour
Jacques = J
louis = L
Shérazade = S
L + S = 110 ⇔ S = 110 - L
J + 110 - L = 122
J - L = 122 - 110
J - L = 12
J + L = 136
J - L = 12
J = 136 - L
136 - L - L = 12
- 2 L = 12 - 136
- 2 L = - 124
L = 62
Louis pèse 62 kg
J + 62 = 136 donc J = 74 kg
J + S = 122
74 + S = 122 donc S = 122 - 74 = 48
S = 48 kg
Jacques = 74
Louis = 62
Sherazade = 48
