Réponses

2013-10-02T20:55:37+02:00
B=(-14,7)-(+4)-(-5)+(-5,7) =-14,7-4+5-5,7=-18,7-0,7=-19.4
C=
(+67,4)-(32,5)+(+45,6)+(-35,6)=67.4-32.5+45.6-35.6=34.9+10=44.9