Bonjour
A = 11/24 +13/8
A = 11/24 + 39/24
A = 50/24 = 25/12
B = 15/12 -10-3
B = 15/12 - 13
B = 15/12 - 156/12
B = -141/12
C = 11/2 - 3/7
C = 77/14 - 6/14
C = 71/14
D = 16/5 + 11/2
D = 32/10 + 55/10
D = 87/10
E = - 4/7 + 13/2
E = - 8/14 + 91/14
E = 83/14
Tu termines. ..
Voilà ^^