Bonjour,
Ex. 1 :
3/4 + 2/6 = 9/12 + 4/12 = 13/12
2/15 + 3/20 = 8/60 + 9/60 = 17/60
5/12 - 9/8 = 10/24 - 27/24 = -17/24
Ex. 2 :
1 - (3/5 + 4/15 + 1/10) = 3030 - (18/30 + 8/30 + 3/30)
= 1/30
Exercice 1
9/12 + 4/12 = 13/12
8/60 + 9/60 = 17/60
10/24 - 27/24 = -17/24
Exercice 2
3/5 + 4/15 +1/10 =
18/30+ 8/30 + 3/30 = 29/30
30/30 - 29/30 => 1/30 pour les sorties
