Réponses

2014-01-29T22:37:20+01:00
B = 4 - 3/4 x (1/3 - 1/6)
B = 4 - 3/4 x (1 x 2 / 3 x 2 - 1/6)
B = 4 - 3/4 x (2/6 - 1/6)
B = 4 - 3/4 x 1/6
B = 4 - 3/24
B = 4 x 24 / 1 x 24 - 3/24
B = 96/24 - 3/24
B = 93/24
B = 3 x 31 / 3 x 8
B = 31/8


D = 2/5 + 3/5 : (1 - 1/10)
D = 2/5 + 3/5 : (1 x 10 / 1 x 10 - 1/10)
D = 2/5 + 3/5 : (10/10 -1/10)
D = 2/5 + 3/5 : 9/10
D = 2/5 + 3/5 x 10/9
D = 2/5 + 30/45
D = 2 x 9 / 5 x 9 + 30/45
D = 18/45 + 30/45
D = 48/45
D = 3 x 16 / 3 x 15
D = 16/15