Réponse:
7 / 3 + - 5 / 3 = 2 / 3
7 / 8 + 5 / - 6 = 1/24
5 / 3 - 7 / 12 = 13/12
4 / 9 + 15 / 2 = 143/18
7 / 9 - 15 / 9 = -8/9
-3 / 4 + 7 /6 = 5/12
12 / 7 + 3 / 7 + 11 / 9 = 212/63
- 7 / 15 + - 10 / 3= -19/3
15 / 7 + 3 = 36/7
4 / 15 - 9 / 10 = 7/6
1 / 3 - 2 / 5 - -10 / 6 = 8/5
- 25 / 4 + 8 / 5= -93/20
