Réponse :
D=(18/6-4/6)/(-1/3-4/9)
D=(14/6)/(-3/9-4/9)
D=(14/6)/(-7/9)
D=7/3*9/-7
D=-63/21
D=-3
Bonjour,
D = (3 - 4/6) : (- 2/6 + - 4/9)
D = [(3 x 3) / (1 x 3) - (2 x 2) / (2 x 3)] ; [(- 2 x 3) / (6 x 3) - (4 x 2) / (9 x 2)]
D = (3/3 - 2/3) : (- 6/18 - 8/18)
D = 1/3 : - 14/18
D = 1/3 x - 18/14
D = - 18/42
D = (6 x - 3) / (6 x 7)
D = - 3/7.
