Lowest Common Multiple/Examples/6 and 15

Example of Lowest Common Multiple of Integers
The lowest common multiple of $6$ and $15$ is:
 * $\lcm \set {6, 15} = 30$

Proof
We find the greatest common divisor of $6$ and $15$ using the Euclidean Algorithm:

Thus $\gcd \set {6, 15} = 3$.

Then: