Evaluate
\frac{7ab}{4}+\frac{a}{2}-\frac{b}{6}
Factor
\frac{21ab+6a-2b}{12}
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\frac{1}{2}a-\frac{1}{6}b-\frac{1}{4}ab+2ab
Combine -\frac{5}{3}b and \frac{3}{2}b to get -\frac{1}{6}b.
\frac{1}{2}a-\frac{1}{6}b+\frac{7}{4}ab
Combine -\frac{1}{4}ab and 2ab to get \frac{7}{4}ab.
\frac{6a-20b-3ab+18b+24ab}{12}
Factor out \frac{1}{12}.
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