Réponses

2013-03-03T21:40:15+01:00

Tu additiones tout, on a donc:
Pim + Toto + Pam + Poum = x + 2x + (x-2) +(x-3) = 31
On a donc : 5x+1 = 31
5x=30
x = 30/5 = 6
Toto = 2x = 12

Voilà !

2013-03-03T21:45:53+01:00