Explications étape par étape:

11/36 × 24 /19 = (11×12×2)/(3×12×19) = (11×2)/(3×19) = 22/57

Verified answer

Bonjour

On note A = 11/36 × 24/19

11 et 19 sont premiers

36 = 2 × 2 × 3 × 3

et 24 = 2 × 2 × 2 × 3

D'où

A = (11 × 24) / (36 × 19)

A = (2 × 2 × 2 × 3 × 11) / (2 × 2 × 3 × 3 × 19)

A = (2 × 11) / (3 × 19)

Soit 11/36 × 24/19 = 22/57