aidez moi à cette exo svp

Bonsoir,
A= 5/6 + 4/6 = 9/6 = 3/2
B= 3/3 +2/3 = 5/3
C= 12/6 -5/6 = 7/6
D= 26/18 +15/18 = 41//18
E= 8/28 - 35/28 = -27/28
F= 7/42 +7/42= 14/42 = 7/21 =1/3
G= 9/12 +36/12 +10/12 =55/12