Bonjour,
I =
-7/6 +5/9 -(11/12 +8/9 -13/6)
-7/6 +5/9 -11/12 -8/9 +13/6
-7/6 +13/6 +5/9 -8/9 -11/12
6/6 -3/9 -11/12
12/12 -11/12 -3/9
1/12 -3/9
1/12 - 1/3
1/12- 4/12 = -3/12 = -1/4
J=
5/16 -(-9/8 +27/12 +11/4 +15/24)
5/16 +9/8 -27/12 -11/4 -15/24
5/16 -11/4 +9/8 -27/12 -15/24
5/16 -44/16 + 18/16 - 54/24 -15/24
-21/16 - 69/24
- 63/48 - 138/48 = 201/48 = 67/ 16
