Answer
$\frac{24-y}{12}$
Work Step by Step
LCD is 12.
$2-\frac{y}{12}=\frac{2}{1}-\frac{y}{12}=\frac{2\times12}{1\times12}-\frac{y}{12}=\frac{24}{12}-\frac{y}{12}=\frac{24-y}{12}$
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