# What is 27/63 expressed in lowest terms?

$\frac{27}{63} = \frac{9 \times 3}{9 \times 7} = \frac{\textcolor{red}{\cancel{\textcolor{b l a c k}{9}}} \times 3}{\textcolor{red}{\cancel{\textcolor{b l a c k}{9}}} \times 7} = \frac{3}{7}$