Répondre :
Pour la question 46 :
a) 14/10 = 2 x 7/5 = 14/5
b) 27/18 = 9 x 3/2 = 27/2
c) 35/40 = 7 x 7/8 = 49/8
d) 63/91 = 7 x 9/13 = 63/13
Pour la question 47 :
a) 48/30 = 2 x 8/5 = 16/5
b) 70/56 = 5 x 5/4 = 25/4
c) 90/72 = 5 x 5/4 = 25/4
d) 72/108 = 8 x 2/3 = 16/3