Least Common Multiple (LCM) of 87 and 80
The least common multiple (LCM) of 87 and 80 is 6960.
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 87 and 80?
First, calculate the GCD of 87 and 80 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 87 ÷ 80 = 1 remainder 7 |
| 2 | 80 ÷ 7 = 11 remainder 3 |
| 3 | 7 ÷ 3 = 2 remainder 1 |
| 4 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 94 and 103 | 9682 |
| 45 and 140 | 1260 |
| 145 and 128 | 18560 |
| 12 and 139 | 1668 |
| 18 and 110 | 990 |