J arrive pas a cette exo n 92 slvp sauver moi

Exercice 92

a) 1/2 = 3/6 = 21/46

b) 11/8 = 88/64 = 44/32

c) 2/5 = 10/25 = 40/100

d) 10/4 = 5/2 = 15/6

e) 14/4 = 42/12 = 21/6

f) 28/8 = 168/48 = 42/12