Réponse:
Bonsoir,
A= 2/3 - 4/3 × 5/2
= 2/3 - 20/6
= 4/6 - 20/6
= 16/6 = 8/4 = 4/2 = 2/(1)
B= (2/3 - 4/3 ) × 5/2
= 2/3 × 5/2
= 10/6 = 5/3 = irréductible
bonne continuation
