Least Common Multiple (LCM) of 80 and 105
The least common multiple (LCM) of 80 and 105 is 1680.
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 80 and 105?
First, calculate the GCD of 80 and 105 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 80 ÷ 105 = 0 remainder 80 |
| 2 | 105 ÷ 80 = 1 remainder 25 |
| 3 | 80 ÷ 25 = 3 remainder 5 |
| 4 | 25 ÷ 5 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 141 and 74 | 10434 |
| 163 and 190 | 30970 |
| 183 and 170 | 31110 |
| 86 and 170 | 7310 |
| 145 and 173 | 25085 |