Answer
$\frac{5}{6}$
Work Step by Step
Find the greatest common factor by multiplying all common factors.
$180=2\times90=2\times2\times45=2\times2\times3\times15=\underline{2\times2\times3\times3}\times5$
$216=2\times108=2\times2\times54=2\times2\times2\times27=2\times2\times2\times3\times9=2\times\underline{2\times2\times3\times3}\times3$
GCF=$2\times2\times3\times3=36$
$\frac{180}{216}=\frac{180\div36}{216\div36}=\frac{5}{6}$
