$$\frac{ 7 }{ 9 } - \frac{ 13 }{ 21 } =$$
$\frac{10}{63}\approx 0.158730159$
$$\frac{49}{63}-\frac{39}{63}$$
$$\frac{49-39}{63}$$
$$\frac{10}{63}$$
Show Solution
Hide Solution
$\frac{2 \cdot 5}{3 ^ {2} \cdot 7} = 0.15873015873015872$
