Least Common Multiple (LCM) of 79 and 120
The least common multiple (LCM) of 79 and 120 is 9480.
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 79 and 120?
First, calculate the GCD of 79 and 120 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 79 ÷ 120 = 0 remainder 79 |
| 2 | 120 ÷ 79 = 1 remainder 41 |
| 3 | 79 ÷ 41 = 1 remainder 38 |
| 4 | 41 ÷ 38 = 1 remainder 3 |
| 5 | 38 ÷ 3 = 12 remainder 2 |
| 6 | 3 ÷ 2 = 1 remainder 1 |
| 7 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 147 and 85 | 12495 |
| 71 and 87 | 6177 |
| 196 and 45 | 8820 |
| 73 and 30 | 2190 |
| 76 and 120 | 2280 |