4/5 * 3/11 * 13/3 * 5/4 = 13/117/6 * 3/2 * 6/14 * 4/9 = 1/325/16 * 3/16 * 32/15 * 4/5 = 1/245/32 * 20/27 * 6/4 * 16/25 = 1
7/3 * 3/7 = 21/21 = 1
4/5 * 5/4 = 1
6/11 * 11/6 = 1
En espérant t'avoir aidé.