adding and subtraction number using greatest common factors 121-22=? What is GCF of this problem?
To subtract two numbers using the greatest common factor (GCF), you need to find the GCF first and then subtract it.
To find the GCF of 121 and 22, you can use the method of prime factorization. Prime factorization breaks each number down into its prime factors, and then the GCF is found by multiplying the common prime factors.
Prime factorization of 121:
121 = 11 * 11
Prime factorization of 22:
22 = 2 * 11
From the prime factorizations, we can see that the GCF of 121 and 22 is 11.
Now, subtracting 22 from 121:
121 - 22 = 99
Therefore, the result of 121 - 22 is 99, and the GCF of these numbers is 11.