Bonjour,
3)
On divise par 11
26/15
4)
1,75/5 * 100/100 = 175/500
on divise par 5
=35/100
7/20
A= 54/21 = 2,57
B= 4/5 + 1
= 4/5 + 5/5
= 9/5
=1,8
C=
(27-10)/3 = 17/3 =5,7