Question

x=4/5+5/6+6/7+...+23/24 si y=11/5+13/6+15/7+...+49/24 aflati x+y pls

Answer 1

Adunam din x si y fractiile cu acelasi numitor:
4/5+11/5=15/5=3
5/6+13/6=18/6=3
6/7+15/7=21/7=3
De la 5 la 24 sunt 20 fractii
suma totala va fi 20x3 adica 60