Réponse:
A= 3 + 3/2
A= 6/2 + 3/2
A= 9/2
D= -2/7 +3/14
D= -4/14 + 3/14
D= -1/14
H= -8/15 + -7/6
H= -16/30 -35/30
H= -51/30
H= -17/10
