Réponses

2014-10-31T10:41:54+01:00
42/15 =( multiples de 3 ) = 14/ 5
108/64 = (multiples de 4) = 27/16 
40/75 = (multiples de 5) = 8/15
90/126 = (multiples de 9 et de 2) = 5/7