Least Common Multiple (LCM) of 72 and 87
The least common multiple (LCM) of 72 and 87 is 2088.
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 72 and 87?
First, calculate the GCD of 72 and 87 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 72 ÷ 87 = 0 remainder 72 |
| 2 | 87 ÷ 72 = 1 remainder 15 |
| 3 | 72 ÷ 15 = 4 remainder 12 |
| 4 | 15 ÷ 12 = 1 remainder 3 |
| 5 | 12 ÷ 3 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 100 and 77 | 7700 |
| 145 and 98 | 14210 |
| 50 and 131 | 6550 |
| 63 and 124 | 7812 |
| 174 and 129 | 7482 |