Least Common Multiple (LCM) of 90 and 60
The least common multiple (LCM) of 90 and 60 is 180.
What is the Least Common Multiple (LCM)?
The LCM of two integers is the smallest positive integer that is divisible by both numbers. It is often used to find common denominators and solve problems involving periodic events.
Formula for LCM
The LCM of two numbers can be calculated using their GCD:
LCM(a, b) = |a × b| ÷ GCD(a, b)
How to Calculate the LCM of 90 and 60?
First, calculate the GCD of 90 and 60 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 90 ÷ 60 = 1 remainder 30 |
| 2 | 60 ÷ 30 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 108 and 15 | 540 |
| 40 and 189 | 7560 |
| 155 and 84 | 13020 |
| 60 and 10 | 60 |
| 179 and 128 | 22912 |