Exercice 1 :
a. 9/12=2+1/4
b. 3/2=2+1/2
Exercice 2 :
A= 12/24
B= 16/24
C= 32/24
D= 6/24
E= 8/24
a. 6/24<8/24<12/24<16/24<32/24
b. pas compris la question dsl