Least Common Multiple (LCM) of 70 and 105
The least common multiple (LCM) of 70 and 105 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 70 and 105?
First, calculate the GCD of 70 and 105 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 70 ÷ 105 = 0 remainder 70 |
| 2 | 105 ÷ 70 = 1 remainder 35 |
| 3 | 70 ÷ 35 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 169 and 52 | 676 |
| 40 and 23 | 920 |
| 90 and 20 | 180 |
| 59 and 140 | 8260 |
| 184 and 171 | 31464 |