Réponse:
T = 1/3 + 1/12 + 1/30
T = 20/60 + 5/60 + 2/60
T = 27/60
T = 9/20
U = 7/6 + 5/12 + 3/16
U = 56/48 + 20/48 + 9/48
U = 85/48
V = 1/2 + 5/4 + 4/5
V = 10/20 + 25/20 + 16/20
V = 51/20
W = 1/4 + 1/8 - 1/16
W = 4/16 + 2/16 - 1/16
W = 6/16 - 1/16
W = 5/16
Y = 4/9 + 8/15 - 2/3
Y = 20/45 + 24/45 - 30/45
Y = 44/45 - 30/45
Y = 14/45
Z = 1/6 - 8/27 - 7/18
Z = 9/54 - 16/54 - 21/54
Z = -28/54
Z = -14/27
