Bonjour
compléter :
23/8 = 16/8 + 7/8 = (2 x 8)/8 + 7/8 = 2 + 7/8
23/8 = 24/8 - 1/8 = (3 x 8)/8 - 1/8 = 3 - 1/8
35/11 = 33/11 + 2/11 = (3 x 11)/11 + 2/11 = 3 + 2/11
35/11 = 44/11 - 9/11 = (4 x 11)/11 - 9/11 = 4 - 9/11
18/13 = 13/13 + 5/13 = 1 + 5/13
18/13 = 26/13 - 8/13 = (2 x 13)/13 - 8/13 = 2 - 8/13
