Least Common Multiple (LCM) of 42 and 35
The least common multiple (LCM) of 42 and 35 is 210.
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 42 and 35?
First, calculate the GCD of 42 and 35 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 42 ÷ 35 = 1 remainder 7 |
| 2 | 35 ÷ 7 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 168 and 52 | 2184 |
| 156 and 33 | 1716 |
| 31 and 149 | 4619 |
| 86 and 57 | 4902 |
| 197 and 117 | 23049 |