Bonsoir,

a) 6/10 = (3 × 2) / (5 × 2) = 3/5

b) 10/14 = (5 × 2) / (7 × 2) = 5/7

c) 14/12 = (7 × 2) / (6 × 2) = 7/6

d) 18/16 = (9 × 2) / (8 × 2) = 9/8

e) 9/12 = (3 × 3) / (4 × 3) = 3/4

f) 27/30 = (9 × 3) / (10 × 3) = 9/10

g) 3/6 = (1 × 3) / (2 × 3) = 1/2

h) 15/18 = (5 × 3) / (6 × 3) = 5/6

i) 10/25 = (2 × 5) / (5 × 5) = 2/5

j) 55/100 = (11 × 5) / (20 × 5) = 11/20

k) 45/35 = (9 × 5) / (7 × 5) = 9/7

l) 15/40 = (3 × 5) / (8 × 5) = 3/8

m) 16/28 = (4 × 4) / (7 × 4) = 4/7

n) 35/60 = (7 × 5) / (12 × 5) = 7/12

o) 24/33 = (8 × 3) / (11 × 3) = 8/11

p) 90/81 = (10 × 9) / (9 × 9) = 10/9

Bonne soirée !