Bonjour
A=5/7-8/7
A = -3/7
B=1/6-(1/6-11/6)
B = 1/6 - (- 10/6)
B = 1/6 + 10/6
B = 11/6
C= -8/3+8
C = - 8/3 + (8 x 3) / (1 x 3)
C = - 8/3 + 24/3
C = 16/3
D=8/3-5/9
D = (8 x 3) / (3 x 3) - 5/9
D = 24/9 - 5/9
D = 19/9
E= -4/3+7/2
E = (- 4 x 2) / (3 x 2) + (7 x 3) / (2 x 3)
E = - 8/12 + 21/12
E = 13/12
F=2-11/2+2/11
E = (2 x 22) / (1 x 22) - (11 x 11) / (2 x 11) + (2 x 2) / (11 x 2)
E = 44/22 - 121/22 + 4/22
E = - 73/22.
