Least Common Multiple (LCM) of 28 and 75
The least common multiple (LCM) of 28 and 75 is 2100.
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 75?
First, calculate the GCD of 28 and 75 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 28 ÷ 75 = 0 remainder 28 |
| 2 | 75 ÷ 28 = 2 remainder 19 |
| 3 | 28 ÷ 19 = 1 remainder 9 |
| 4 | 19 ÷ 9 = 2 remainder 1 |
| 5 | 9 ÷ 1 = 9 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 135 and 37 | 4995 |
| 190 and 72 | 6840 |
| 73 and 149 | 10877 |
| 125 and 52 | 6500 |
| 189 and 182 | 4914 |