Question

x=1supra3+1supra4+1supra5 si y=2supra3+3supra4+4supra5,atunci x+y= ?​

Answer 1

Răspuns:

x=1/3+1/4+1/5 aducem la acelasi numitor comun

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

x=47/60

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

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

y=133/60

x+y=47/60+133/60

x+y=180/60

x+y=3