Question

What is the least common denominator of 13 and 19

Answer 1

$LCM\ is\ the\ least\ common\ number\ that\ is\ multiply\ of\ both:\\\\ Factors\ of\ 13\\ 13:13\\\\ Factors\ of\ 19:\\ 19:19\\\\ LCM(13,19)=13*19=247\\\\ \textbf{LCM(13,19)=247}$