Solve for: (2)/(9)=(r)/(36)

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Expression: $\frac{ 2 }{ 9 }=\frac{ r }{ 36 }$

Simplify the equation using cross-multiplication

$72=9r$

Swap the sides of the equation

$9r=72$

Divide both sides of the equation by $9$

$r=8$

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