Least Common Multiple (LCM) of 20 and 14
The least common multiple (LCM) of 20 and 14 is 140.
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 20 and 14?
First, calculate the GCD of 20 and 14 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 20 ÷ 14 = 1 remainder 6 |
| 2 | 14 ÷ 6 = 2 remainder 2 |
| 3 | 6 ÷ 2 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 69 and 30 | 690 |
| 153 and 127 | 19431 |
| 115 and 45 | 1035 |
| 49 and 36 | 1764 |
| 113 and 120 | 13560 |