Réponses

2014-09-14T12:19:15+02:00
Bonjour

A = (2/3 + 1/2) : (3 - 2/5)
A = ( 4/6 + 3/6) : ( 15/5 - 2/5)
A = 7/6 : 13/5
A = 7/6 x 5/13
A = 35/78

B = ( 43/13) : (4/5 +7/2)
B = (43/13) : (8/10 + 35/10)
B = 43/13 : 43/10
B = 43/13 x 10/43 = 430/559= 10/13