Bonsoir,
Calculer :
A=2- 25/9
A = (2 x 9) / (1 x 9) - 25/9
A = 18/9 - 25/9
A = - 7/9
B=2/7 - 7
B = 2/7 - (7 x 7) / (1 x 7)
B = 2/7 - 49/7
B = - 47/7
C=-5/3- 10
C = - 5/3 - (10 x 3) / (1 x 3)
C = - 5/3 - 30/3
C = - 35/3
D=11/9 - 5/4 + 5
D = (11 x 4) / (9 x 4) - (5 x 9) / (4 x 9) + (5 x 36) / (1 x 36)
D = 44/36 - 45/36 + 180/36
D = 179/36
E=-5/3 - 5/6 - 5/9
E = (- 5 x 6) / (3 x 6) - (5 x 3) / (6 x 3) - (5 x 2) / (9 x 2)
E = - 30/18 - 15/18 - 10/18
E = - 55/18.
