Least Common Multiple (LCM) of 84 and 109
The least common multiple (LCM) of 84 and 109 is 9156.
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 84 and 109?
First, calculate the GCD of 84 and 109 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 84 ÷ 109 = 0 remainder 84 |
| 2 | 109 ÷ 84 = 1 remainder 25 |
| 3 | 84 ÷ 25 = 3 remainder 9 |
| 4 | 25 ÷ 9 = 2 remainder 7 |
| 5 | 9 ÷ 7 = 1 remainder 2 |
| 6 | 7 ÷ 2 = 3 remainder 1 |
| 7 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 180 and 128 | 5760 |
| 55 and 130 | 1430 |
| 159 and 166 | 26394 |
| 89 and 26 | 2314 |
| 75 and 38 | 2850 |