Sagot :
Bonjour
J = 5/2 + 8/3 = (5 x 3) / (2 x 3) + (8 x 2) / (3 x 2) = 15/6 + 16/6 = 31/6
K = 4/7 + 1/6 = (4 x 6) / (7 x 6) + (1 x 7) / (6 x 7) = 24/42 + 7/42 = 31/42
L = 7/4 + 3/5 = (7 x 5) / (4 x 5) + (3 x 4) / (5 x 4) = 35/20 + 12/20 = 47/20
M = 6/5 + 5/6 = (6 x 6) / (5 x 6) + (5 x 5) / (6 x 5) = 36/30 + 25/30 = 61/30
N = 2/3 - 1/4 = (2 x 4) / (3 x 4) - (1 x 3) / (4 x 3) = 8/12 - 3/15 = 5/12
P = 3/7 - 7/8 = (3 x 8) / (7 x 8) - (7 x 7) / (8 x 7) = 24/56 - 49/56 = - 25/56
R = 8/9 - 1/2 = (8 x 2) / (9 x 2) - (1 x 9) / (2 x 9) = 16/18 - 9/18 = 7/18
S = 11/10 - 4/3 = (11 x 3) / (10 x 3) - (4 x 10) / (3 x 10) = 33/30 - 40/30 = - 7/30.