aider moi svp maths niveau 6ème​

Bonsoir,

a. 25/35 = (5 x 5) / (5 x 7) = 5/7

b. 64/16 = (16 x 4) / (16 x 1) = 4

c. 2 800/300 = (100 x 28) / (100 x 3) = 28/3

d. 90/66 = (6 x 15) / (6 x 11) = 15/11

e. 100/175 = (25 x 4) / (25 x 7) = 4/7

f. 34/51 = (17 x 2) / (17 x 3) = 2/3