Least Common Multiple (LCM) of 49 and 140
The least common multiple (LCM) of 49 and 140 is 980.
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 49 and 140?
First, calculate the GCD of 49 and 140 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 49 ÷ 140 = 0 remainder 49 |
| 2 | 140 ÷ 49 = 2 remainder 42 |
| 3 | 49 ÷ 42 = 1 remainder 7 |
| 4 | 42 ÷ 7 = 6 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 61 and 172 | 10492 |
| 64 and 152 | 1216 |
| 97 and 157 | 15229 |
| 88 and 79 | 6952 |
| 103 and 143 | 14729 |