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# How to multiply fractions (Basic)

Let's calculate $\dfrac{ 2 }{ 3 } \times \dfrac{ 5 }{ 7 }$. You can take 3 steps:

1. Multiply the numerators.
2. Multiply the denominators.
3. Write a slash.

\begin{eqnarray*} && \frac{ 2 }{ 3 } \times \frac{ 5 }{ 7 } \\ &=& \frac{ 2 \times 5 }{ 3 \times 7 } \\ &=& \frac{ 10 }{ 21 } \end{eqnarray*}

## Questions

1. $\dfrac{ 1 }{ 2 } \times \dfrac{ 1 }{ 3 }$

2. $\dfrac{ 5 }{ 6 } \times \dfrac{ 3 }{ 5 }$

Oh, 15 is a divisor of 30, then $\dfrac{ 15 }{ 30 } = \dfrac{ 1 }{ 2 }$.