bonjour

5/9  et 5.01 / 9.01

5/9 = 0.5555......

5.01 /9.01 = 0.556048.....

donc  5.01/9.01 > 5/9

5 - 7/6 = 30/6 - 7/6 = 23 /6

11/9 + 5/18 = 22/18 + 5 /18 = 27/18 = 3/2

10/3 - 22 /7 =  ( 30 - 66 ) /21 = - 36/21 = - 12/7

5/3 - 3/4 + 11 /6

= ( 20 - 9 + 22 ) /12

= 33/12

=  11/4

- 56/63 =  - 8 /9