Bonjour,
Exercice 1
a)
=6/3 = 3
b)
18/36 = 1/2
c)
10/100=1/10
d)
17/7
Exercice 2
6/10 + 1/10 = 7/10
9/21 - 2/21 = 7/21 = 1/3
1/10 + 5/10 + 6/10 = 12/10 = 6/5
1/22 - 2/22 = -1/22