Réponses

2014-01-19T13:10:08+01:00
(-2)+(+3)+(-2)+(-9)+(+10)

= -2 + 3 - 2 -9 +10  = 0

1+(-2)+(-3)+(+5)+(-9)+(+2)

= 1 -2 -3 +5 -9 +2 = -6
2014-01-19T13:12:45+01:00