Réponse :
A = 8/9/24/3 = 8 x 3)/(9 x 24) = 1/9
B = 2/3/4 = 2/(3 x 4) = 1/6
C = 2/3/4 = 1/6
D = 1/5/2) x 5/2 = 5/(5 x 4) = 1/4
Explications étape par étape