Répondre :
bonjour
3/7 + 11/14 = 6/14 + 11/14 = 17/14
7/5 - 3 /10 = 14/10 - 3/10 = 11 /10
- 3/11 - 8/5 = - 15/55 - 88/55 = - 103/55
Bonjour,
3/7+x=17/14
x=17/14-3/7=17/14-6/14=11/14
7/5-(-3/10)=14/10+3/10=17/10
-3/11+8/(-5)=-3/11-8/5=-15/55-88/55=-103/55