Réponse :
Explications étape par étape
Bonsoir
8/3-5/3:(4/6+4/14)
= 8/3 - 5/3 : [(4 x 7)/(6 x 7) + (4 x 3)/(14 x 3)]
= 8/3 - 5/3 : (28/42 + 12/42)
= 8/3 - 5/3 : (40/42)
= 8/3 - 5/3 x 42/40
= 8/3 - 42/3 x 5/40
= 8/3 - 14 x 1/8
= (8 x 8)/(3 x 8) - (14 x 3)/(8 x 3)
= 64/24 - 42/24
= 22/24
= (2 x 11)/(2 x 12)
= 11/12
