Bonjour
A = 7/18 + 2/6 + 5/9
A = 7/18 + (2 x 3) / (6 x 3) + (5 x 2) / (9 x 2)
A = 7/18 + 6/18 + 10/18
A = 23/18
B = 1/24 + 5/36
B = (1 x 3) / (24 x 3) + (5 x 2) / (36 x 2)
B = 3/72 + 10/72
B = 13/72
C = 11/7 + 7/9 + 6/21
C = (11 x 9) / (7 x 9) + (7 x 7) / (9 x 7) + (6 x 3) / (21 x 3)
C = 99/63 + 49/63 + 18/63
C = 166/63
