Réponse :
bonsoir
A = 25/60 - 9/60 = 16/60 = 4 /15
B = 5/22 - 14/22 = - 9/22
C = - 12 / - 21 = 4/7
D = 40/5 - 4/5 = 36/5
E = - 42/3 = - 14
F = 525/140 = 15/4
Explications étape par étape :
