bonjour,
GD = gros dédé
B =boudin
F = francis
GD+B = 140kg
GD+F = 145kg
F+B = 35kg
2GD+B+fF = 140+145 = 285Kg
on sait que F+B = 35kg
donc2 GD = 285-35 = 250kg
GD = 250/2 =125KG
GD+F = 145kg
F = 145-125 = 20kg
F+B = 35kg
B = 35-20 =15KG
Gros Dédé pèse 125Kg
Francis pèse 20gk
Boudin pèse 15kg
eox 4 :
1) x = les carnotaurus
(25-x) = les tricératops
2) 2x
3) 3(25-x)
4) 2x+3(25-x) = 65
5) 2x+75-3x = 65
2x-3x =65-75
-x = -10
x = 10
10 carnotaurus
15 tricératops
vérification :
(10*2)+(15*3) = 20+65
