Range dans l'ordre croissant : 7/4 ; 173/100 ; 2 ; 36/20

7/4 = 1,75

173/100 = 1,73

2

36/20 = 1,8

1,73 < 1,75 < 1,8 < 2

1) 7/4 = (25*7)/(25*4) = 175/100
2) 173/100
3) 2 = 2/1 = (100*2)/(100*1) = 200/100
4) 36/20 = (5*36)/(5*20) = 180/100

173/100 < 175/100 < 180/100 < 200/100

Donc :

173/100 < 7/4 < 36/20 < 2