Réponse :
60 /80 = 6x10/8x10 = 6 / 8 = 3x2 /4x2 = 3/4
63/14 = 7x7 / 7x2 = 7 / 2
36/12 = 9x4 /3x4 = 9/3 = 3x3 / 3x1 = 3/1
48/42 = 8x7 /6x7 = 8/6 = 4x2 / 3x2 = 4/3
13/65 = 13x1 / 13x5 = 1/5
28/24 = 7x4 / 6x4 = 7/6
40/24 = 4x10 /4x6 =10/6 =5x2 / 3x2 = 5/2
66/11 =6x11 / 11x1 = 6/1
