## Thinking Mathematically (6th Edition)

$\dfrac{64}{99}$
RECALL: Repeating decimals of the form $0.\overline{a}$, where $10 \le a \lt 100$, can be written in fraction form as: $\dfrac{a}{99}$ $a=64$ for the given decimal. Thus, its equivalent fraction is: $=\dfrac{64}{99}$