Answer
$\frac{9a-2}{24}$
Work Step by Step
$\frac{7}{8}a-\frac{11}{12}-\frac{1}{2}a+\frac{5}{6}$
$\frac{21}{24}a-\frac{22}{24}-\frac{12}{24}a+\frac{20}{24}$
$\frac{9}{24}a-\frac{2}{24}$
$\frac{9a-2}{24}$
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