Bonjour,
a
5/5+5/5+5/5 +1/5 => 3+1/5
b
8/8+8/8+8/8+8/8/+8/8+8/8 + 2/8
=>6+ 1/4
c
11/11 +11/11 +11/11 +11/11 +11/11 +11/11 +11/11+ 11/11+ 11/11 + 11/11+ 11/11+ 11/11 + +1/11
=> 12 +1/11
d
0+ 19/28