pourriez vou svp m'aider a l'exercice 31 ? 20 POINTS POUR CETTE EXERCICE!!

6/5 = 1.2
1/2 = 0.5
9/4 = 2.25
1/50 = 0.02
9/8 = 1.125

Exercice 31:

a) 1.2 = 12/10 =6/5 
b) 0.5=5/10=1/2  
c)2.25=225/100 =45/20=9/4             
d)0.02=2/100=1/50  
e)1.125 = 1125/1000  = 225/200 = 45/40 = 9/8
         
Exercice 32:

a) 1.2/20= 12/20 = 6/10=3/5 
b 1.5/30=15/300=1/20 
c) 7.68 / 1.4 = 768 / 140 =192 /35  
d) 0.96 / 0.84 = 96 / 84  =24/21= 8/7 
e) 28/3.5 = 280/35=56/5