Least Common Multiple (LCM) of 69 and 120
The least common multiple (LCM) of 69 and 120 is 2760.
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 69 and 120?
First, calculate the GCD of 69 and 120 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 69 ÷ 120 = 0 remainder 69 |
| 2 | 120 ÷ 69 = 1 remainder 51 |
| 3 | 69 ÷ 51 = 1 remainder 18 |
| 4 | 51 ÷ 18 = 2 remainder 15 |
| 5 | 18 ÷ 15 = 1 remainder 3 |
| 6 | 15 ÷ 3 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 134 and 170 | 11390 |
| 183 and 189 | 11529 |
| 166 and 36 | 2988 |
| 49 and 79 | 3871 |
| 71 and 145 | 10295 |