Bonsoir,
A = 4/3 - 6/15
A = (4 x 5) / (3 x 5) - 6/15
A = 20/15 - 6/15
A = 14/15
B = - 6/11 - 4/5
B = (6 x 5) / (11 x 5) - (4 x 11) / (5 x 11)
B = 30/55 - 44/55
B = - 14/55
C = 5 + 6/7
C = (5 x 7) / (1 x 7) + 6/7
C = 35/7 + 6/7
C = 41/7
D = - 3 - 5 x (- 2)
D = - 3 + 10
D = 7
E = 7 x 5 + 18 x (- 4) - (14 - 9,1)
E = 35 - 72 - 4,9
E = - 41,9.
