Question

daca x=1/3+1/4+1/5 si y= 2/3+3/4+4/5,atunci x+y este​

Answer 1

Explicație pas cu pas:

x=1/3+1/4+1/5

x=20/60+15/60+12/60

x=35/60+12/60

x=47/60

y=2/3+3/4+4/5

y=40/60+45/60+48/60

y=85/60+48/60

y=133/60

x+y=47/60+133/60=180/60=18/6=3/1=3

Am amplificat pe 1/3 cu 20, apoi 1/4 cu 15, iar 1/5 cu 12. Aceeasi procedura am aplicat-o si in ceea ce priveste pe y.