Bonsoir.
(J'ai cru comprendre que c'est ÷ 5/18 et pas + 5/18)
A = 11/6-(-3/4-5/6)
A = 11/6-(-18/24-20/24)
A = 11/6-38/24
A = 44/24-38/24
A = 6/24
A = 1/4
B = 3/11-5/11×-2/3
B = 3/11+10/33
B = 9/33+10/33
B = 19/33
C = (5/8-7/6)×(8/5-3/35)
C = (30/48-56/49)×( 56/35-3/35)
C = -26/48×53/35
C = -1378/1680
C = -689/840
D = (-5/12-7/12):5/18
D = -1÷5/18
D = -18/5
/ = fraction
: = division
Bonne soirée.