Bonjour pouvex vous me aider avec cette exercice merci.

Bonjour,

A = (3/2 - 1/3) / (3/4 + 2/3)
A = (9/6 - 2/6) / (9/12 + 8/12)
A = (7/6) / (17/12)
A = 7/6 x 12/17
A = 12/6 x 7/17
A = 2 x 7/17
A = 14/17

B = 2 + (2/7) / (5/14)
B = 2 + 2/7 x 14/5
B = 2 + 14/7 x 2/5
B = 2 + 2 x 2/5
B = 10/5 + 4/5
B = 14/5

C = -3/14 - 3 / (7/5) + 2
C = -3/14 -3 x 5/7 + 2
C = -3/14 - 15/7 + 2
C = -3/14 - 30/14 + 28/14
C = -33/14 + 28/14
C = -5/14

D = 7/5 + (8/15) / (2/3) - 19/2
D = 7/5 + 8/15 x 3/2 - 19/2
D = 7/5 + 8/2 x 3/15 - 19/2
D = 14/10 + 4 x 1/5 - 95/10
D = 14/10 + 4/5 - 95/10
D = -81/10 + 8/10
D = - 73/10