Answer
$x=18$
Work Step by Step
$\frac{3}{a}=\frac{1}{6}$
$\frac{3}{a}*\frac{1}{3}=\frac{1}{6}*\frac{1}{3}$
$\frac{3}{3a}=\frac{1}{18}$
$\frac{1}{a}=\frac{1}{18}$
$a=18$
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