Bonjour
A = 11/6 - (- 3/4 - 5/6)
A = (11 x 2) / (6 x 2) - [(- 3 x 3) / (4 x 3) - (5 x 2) / (6 x 2)]
A = 22/12 - (- 9/12 - 10/12)
A = 22/12 - (- 19/12)
A = 22/12 + 19/12
A = 41/12
B = 3/11 - 5/11 x - 2/3
B = 3/11 + 10/33
B = (3 x 3) / (11 x 3) + 10/33
B = 9/33 + 10/33
B = 19/33
C = (5/8 - 7/6) x (8/5 - 3/35)
C = [(5 x 3) / (8 x 3) - (7 x 4) / (6 x 4)] x [(8 x 7) / (5 x 7) - 3/35]
C= (15/24 - 28/24) x (56/35 - 3/35)
C = - 13/24 x 53/35
C = - 689/840
D = - 5/12 - 7/12 : 5/18
D = - 5/12 - 7/12 x 18/5
D = - 5/12 - 126/60
D = (- 5 x 5) / (12 x 5) - 126/60
D = - 25/60 - 126/60
D = - 151/60.
