Least Common Multiple (LCM) of 90 and 69
The least common multiple (LCM) of 90 and 69 is 2070.
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 90 and 69?
First, calculate the GCD of 90 and 69 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 90 ÷ 69 = 1 remainder 21 |
| 2 | 69 ÷ 21 = 3 remainder 6 |
| 3 | 21 ÷ 6 = 3 remainder 3 |
| 4 | 6 ÷ 3 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 25 and 82 | 2050 |
| 172 and 72 | 3096 |
| 140 and 181 | 25340 |
| 47 and 20 | 940 |
| 187 and 170 | 1870 |