Tính:
a) \(9\dfrac{7}{8} \times 5\dfrac{6}{7}\)
b) \(7\dfrac{5}{{12}}:3\dfrac{1}{4}\)
Tính:
a) \(9\dfrac{7}{8} \times 5\dfrac{6}{7}\)
b) \(7\dfrac{5}{{12}}:3\dfrac{1}{4}\)
a) \(9\dfrac{7}{8} \times 5\dfrac{6}{7} = \dfrac{{79}}{8} \times \dfrac{{41}}{7} = \dfrac{{79 \times 41}}{{8 \times 7}} = \dfrac{{3239}}{{56}}\)
b) \(7\dfrac{5}{12} : 3\dfrac{1}{4} = \dfrac{{89}}{{12}} :\dfrac{{13}}{4} = \dfrac{{89 \times 4}}{{12 \times 13}} = \dfrac{{89}}{{39}}\)
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