Answer :

luana
[tex]Greatest\ common\ factor\ is\ the\ highest\ number\ by\ which\ 14 \ and\ 21 \\can\ be\ divided\\\\ 14:2\\7:7\\\\ 21:3\\ 7:7 \\\\GCF=7\\\\Greatest\ common\ factor\ of\ 14\ and\ 21 \ is\ equal\ to\ 7. [/tex]