Réponse :
Explications étape par étape
Bjr,
26/4; 30/8; 43/5; 21/3
120:
120 / 4 =30
120/ 8 = 15
120/5 = 24
120/3 = 40
=> (26*30)/(4*30)= 780/120
=> 30/8 = (30*15)/( 8*15) = 450/120
=> 43/5 = (43*24)/ (5*24) = 1032/120
=> 21/3 = (21*40)/ (3*40)= 840/ 120
2)
30/8, 26/4 , 21/3, 43/5
☺
