Réponses

2013-09-18T17:37:58+02:00
2013-09-18T17:42:15+02:00
A= -8 + 5 + 4 + 17 = 18
B= 42-4+35+12-5=80
C= 22-(7-5+6)= 22+6-5= 14

A= -0.7 x (-6) x (-25) x4
= 4,2 x (-25)x4
= -105x4= -420