Question

Show me how to take out LCM of 18 & 45

Answer 1

Divide. Answer is 9

Step-by-step explanation:

Let's find out the LCM of 18 and 45

18 & 45

What is the greatest number you can divide by both.

The greatest number you can get by dividing both is 9.

Answer 2

Step-by-step explanation:

First we have to find multiples of 18 and multiples of 45:

`\begin{gathered} 18\colon18,36,54,72,90,108\ldots \\ 45\colon45,90,135\ldots \end{gathered}`

From these multiples we have to identify which one is common for both numbers (it appears in the multiples of 18 AND 45) and is the least. In this case 90 is the least common multiple.

Answer:

LCM: 90