$\"\"$

The expression is 7 cups to 9 pints.

The ratio is $\"\"$ .

The fraction is $\"\"$

$\"\"$ (1 pint = 2 cups)

$\"\"$ (Divide numerator and denominator by their GCF 126)

$\"\"$ (Cancel common terms)

$\"\"$ $\"\"$

Written in simplest form , the ratio is 7 to 18.