Réponse :

Explications étape par étape

Bonsoir

D = 26/48 + 11/24

D = 13/24 + 11/24

D = 24/24

D = 1

E = 14/12 - 25/30

E = 7/6 - 5/6

E = 2/6

E = 1/3

F = 1 - 15/30 + 9/6

F = 1 - 1/2 + 3/2

F = 1 + 2/2

F = 2