Least Common Multiple (LCM) of 49 and 63
The least common multiple (LCM) of 49 and 63 is 441.
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 63?
First, calculate the GCD of 49 and 63 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 49 ÷ 63 = 0 remainder 49 |
| 2 | 63 ÷ 49 = 1 remainder 14 |
| 3 | 49 ÷ 14 = 3 remainder 7 |
| 4 | 14 ÷ 7 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 120 and 87 | 3480 |
| 15 and 123 | 615 |
| 184 and 170 | 15640 |
| 83 and 20 | 1660 |
| 115 and 155 | 3565 |