Sagot :

Vins

bonsoir

5/4 + 2/4 = 7/4

3/5 + 6/35 = 21/35 + 6/35 = 27/35

2/7 + 9/12 = 2/7 + 3/4 = 8/28 + 21/28 = 29/28

2/3 + 4/7 = 14/21 + 12/21 = 26/21