# Least common multiple of 9 15 and 21 relationship

### GCD and LCM Calculator with detailed explanation

We will learn the relationship between H.C.F. and L.C.M. of two numbers. First we need to find the highest common factor (H.C.F.) of 15 and 18 which is 3. Then we need to Therefore, highest common factor of and = Lowest. First we need to write out the prime factors of 9 and ×3 ×5. Now we group them together: 9:(3×3) (3)×(5). Next we take the largest. 9= 3*3 15= 3*5 21=3*7. You find the prime factorization and you take the numbers that appear the most times and multiply them.

Неудачный выбор места, - прокомментировал Смит. - Халохот думал, что поблизости никого.

• What is the Least common multiple of 9,15, and 21?
• What is the relationship between LCD and LCM?
• What is the least common multiple of 9 and 15?

Халохот какое-то время наблюдал за происходящим, потом скрылся за деревьями, по-видимому, выжидая. - Сейчас произойдет передача, - предупредил Смит. - В первый раз мы этого не заметили.