bonjour quelqu'un pourrait m aider merci d avance :)​

Bonsoir,

A= 5/6 * 7/2

= 35/12

B= 11/9 *3/22

= 33/ 198 = 3/18

C= 40/ 15 *9/8

= 360/120 = 36/12 = 3

D= 7/3 - 4/3 * 5/12

= 7/3 -20/36

= 84/36 - 20/36

= 64/36 = 32/18 = 16/9

E= (10/10 - 3/10 )/ (15/30)

7/10 / 1/15

= 7/10 *15

= 105/10 = 21/2