<prompt> Kokotoa nambari left fracrs kulia3 ikiwa r na s ni nambari zisizo sufuri zinazoridhishafrac1r s frac1r frac1s.  <response>: Kuzidisha pande zote mbili kwa rsr s, tunapatars sr s rr s.Hii hurahisisha hadi r2 rs s2 0. Kishar - sr2 rs s2 0,ambayo hupanuka kama r3 - s3 0. Kwa hiyo, left fracr s kulia3 1. 