21
What Is The Gcf Of 42 And 63?
21
The GCF is the largest number that can divide a number
First get the prime factors of each number
42 = 2 * 3 * 7 63 = 3 * 3 * 7
the GCF = 3 * 7 = 21
First get the prime factors of each number
42 = 2 * 3 * 7 63 = 3 * 3 * 7
the GCF = 3 * 7 = 21
3 is the gcf.