Bonjour,
D = 6/4 - (1/4 + 5/12)
D = (6 x 3) / (4 x 3) - [(1 x 3) / (4 x 3) + 5/12]
D = 18/12 - (3/12 + 5/12)
D = 18/12 - 8/12
D = 10/12
D = (2 x 5) / (2 x 6)
D = 5/6.
D=6/4-(1/4+5/12)
D=6/4-(3/12+5/12)
D=18/12-8/12
D=10/12
D=5/6
