Simplify \(9\times \frac{c}{10}\) to \(\frac{9c}{10}\).
\[\frac{9c}{10}=\frac{9}{5}\]
Multiply both sides by \(10\).
\[9c=\frac{9}{5}\times 10\]
Use this rule: \(\frac{a}{b} \times c=\frac{ac}{b}\).
\[9c=\frac{9\times 10}{5}\]
Simplify \(9\times 10\) to \(90\).
\[9c=\frac{90}{5}\]
Simplify \(\frac{90}{5}\) to \(18\).
\[9c=18\]
Divide both sides by \(9\).
\[c=\frac{18}{9}\]
Simplify \(\frac{18}{9}\) to \(2\).
\[c=2\]
c=2
