Réponse :
Explications étape par étape
Bonjour
2/3 - 3/4 + 5/6
= 16/24 - 18/24 + 20/24
= 36/24 - 18/24
= 18/24
= (3 x 6)/(4 x 6)
= 3/4
(7/6 - 1/3)/(4 + 14/9)
= (7/6 - 2/6) / (36/9 + 14/9)
= 5/6 / 50/9
= 5/6 x 9/50
= 5/50 x 9/6
= 5/(5 x 10) x (3 x 3)/(3 x 2)
= 1/10 x 3/2
= 3/20