Multiply both sides by \(a\).
\[18=\frac{3}{4}a\]
Simplify \(\frac{3}{4}a\) to \(\frac{3a}{4}\).
\[18=\frac{3a}{4}\]
Multiply both sides by \(4\).
\[18\times 4=3a\]
Simplify \(18\times 4\) to \(72\).
\[72=3a\]
Divide both sides by \(3\).
\[\frac{72}{3}=a\]
Simplify \(\frac{72}{3}\) to \(24\).
\[24=a\]
Switch sides.
\[a=24\]
a=24
