Respuesta :

to get the Greatest Common Factor (GCF) of 63 and 15 we need to factor each value first and then we choose all the copies of factors and multiply them: 

63:   33 715:   3 5 GCF:   3   

The Greates Common Factor (GCF) is:   3

yes i did get this of another website cause i didint know how to explain it properly