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OpenStudy (anonymous):

Solve for a.

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OpenStudy (anonymous):

OpenStudy (anonymous):

36

OpenStudy (anonymous):

7a/12 = 21

OpenStudy (anonymous):

\[\frac{a}{4}+\frac{a}{3}= 21\]\[\frac{a}{4}+\frac{a}{3}-21\text{= }0\]Combine fractions.\[\frac{7}{12} (-36+a)\text{ = }0\]\[a = 36 \]

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