Bonjour,
A= 11/6-(-3/4 - 5/6).
= 11/6 -( -18/24 - 20/24)
= 11/6 - 38/24
= 44/24 - 38/24
= 6/24
= 1/4
B= 3/11 - 5/11 x -2/3
=3/11 + 10/ 33
=9/33 +10/33
= 19/33
C= (5/8 - 7/6) x (8/5 -3/35)
= (30/ 48 - 56/49) * ( 56/35 -3/35)
= - 26/48 * 53/35
= -1 378/ 1 680
= - 689/ 840
D=( -5/12 - 7/1) / 5/18
= -12/12 /5/8
= -1 * 8/5
= -8/5
Corrigé!