Answer
$\frac{18x}{55}$
Work Step by Step
$\frac{18x}{20}$ $\times$$\frac{36}{99}$=
=$\frac{18x\times36}{20\times99}$=$\frac{18x\times4\times9}{5\times4\times11\times9}$=
=$\frac{18x}{5\times11}$=
=$\frac{18x}{55}$
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