Question

What is the gcf of 45, 90, and 75

Answer 1

$Greatest\ common\ factor\ is\ the\ highest\ number\ by\ witch\ 45\ and\ 90\\and\ 75\ can\ be\ divided\\\\ 45:3\\ 15:3\\5:5\\\\ 90:2\\ 45:3\\15:3\\5:5\\\\75:3\\25:5\\5:5\\\\\\GCF=3*5=15\\\\Greatest\ common\ factor\ of\ 45\ and\ 90\ and\ 75\ is\ equal\ to\ 15.$