Least Common Multiple (LCM) of 28 and 35
The least common multiple (LCM) of 28 and 35 is 140.
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 28 and 35?
First, calculate the GCD of 28 and 35 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 28 ÷ 35 = 0 remainder 28 |
| 2 | 35 ÷ 28 = 1 remainder 7 |
| 3 | 28 ÷ 7 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 104 and 147 | 15288 |
| 105 and 21 | 105 |
| 176 and 87 | 15312 |
| 100 and 105 | 2100 |
| 28 and 161 | 644 |