\(12ab(\frac{5}{6a} + \frac{1}{4ab^{2}}) =\)

\(= 12ab \times \frac{5}{6a} + 12ab \times \frac{1}{4ab^{2}} =\)

\(= (12 \times \frac{5}{6})(a \times a)(b) + (12 \times \frac{1}{4})(a \times a)(b \times b^2) =\)

\(= 10a^{2}b + 3a^{2}b^{3}\)

Question

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