Question

Hello,
I was just wondering how to find the highest common factor of 20x and 45xy. I don't know how to answer this question because of the terms that are there. Thank You!

Answer 1

Question is 20 and 45 and we have to find Highest Common Factor (HCF)

Step - Step Explanation :

These Are Factors

20 45

1 x 20 1 x 45

2 x 10 3 x 15

4 x 5 5 x 9

These Are Common

For 20 : 1© , 2 , 4 , 5© , 10 , 20

For 45 : 1© , 3 , 5© , 9 , 15 , 45

These Are Highest

( © ) Common is 1 ; 5

So, The Highest Common Factor Is 5