Réponses

2013-12-19T19:22:59+01:00
A = 2+3/5-3/2
A= 20/10+6/10-15/10
A=11/10

B=3/(6/5)
B=3x5/6=15/6


C=4x3/8=12/8

D=-4/7-(-3/4)
D=-4/7+3/4
D=-16/28+21/28=5/28

E=-14/3x(-3/7)
E=42/21 ou 2