Common Denominator/Examples/2, 3, 7

Examples of Common Denominators
The fractions:


 * $\dfrac 1 2$, $\dfrac 1 3$, $\dfrac 3 7$

have common denominators:
 * $42$, $84$, $126$, $168$

and so on.

The lowest common denominator of $\dfrac 1 2$, $\dfrac 1 3$, $\dfrac 3 7$ is $42$.