Answer :

luana
[tex]Greatest\ common\ factor\ is\ the\ highest\ number\ by\ witch\ 49\ and\ 91\\can\ be\ divided\\\\ 49:7\\ 7:7\\\\ 91:7\\13:13\\\\GCF=7\\\\Greatest\ common\ factor\ of\ 49\ and\ 91\ is\ equal\ to\ 7. [/tex]