Least Common Multiple (LCM) of 85 and 72
The least common multiple (LCM) of 85 and 72 is 6120.
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 85 and 72?
First, calculate the GCD of 85 and 72 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 85 ÷ 72 = 1 remainder 13 |
| 2 | 72 ÷ 13 = 5 remainder 7 |
| 3 | 13 ÷ 7 = 1 remainder 6 |
| 4 | 7 ÷ 6 = 1 remainder 1 |
| 5 | 6 ÷ 1 = 6 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 175 and 131 | 22925 |
| 185 and 152 | 28120 |
| 172 and 194 | 16684 |
| 140 and 130 | 1820 |
| 50 and 142 | 3550 |