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.