Least Common Multiple (LCM) of 90 and 79
The least common multiple (LCM) of 90 and 79 is 7110.
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 90 and 79?
First, calculate the GCD of 90 and 79 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 90 ÷ 79 = 1 remainder 11 |
| 2 | 79 ÷ 11 = 7 remainder 2 |
| 3 | 11 ÷ 2 = 5 remainder 1 |
| 4 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 128 and 144 | 1152 |
| 176 and 64 | 704 |
| 175 and 72 | 12600 |
| 81 and 20 | 1620 |
| 87 and 131 | 11397 |