Least Common Multiple (LCM) of 120 and 15
The least common multiple (LCM) of 120 and 15 is 120.
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 120 and 15?
First, calculate the GCD of 120 and 15 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 120 ÷ 15 = 8 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 117 and 90 | 1170 |
| 153 and 125 | 19125 |
| 90 and 72 | 360 |
| 143 and 107 | 15301 |
| 92 and 190 | 8740 |