Multiplication of fractions

Calculate:

  1. $\dfrac{5}{9}\cdot\dfrac{-4}{8}$
  2. $\dfrac{-3}{7}\cdot\dfrac{-1}{10}$
  1. $\dfrac{5}{9}\cdot\dfrac{-4}{8}=\dfrac{5}{9}\cdot\dfrac{-1}{2}=\dfrac{5\cdot(-1)}{9\cdot2}=\dfrac{-5}{18}$
  2. $\dfrac{-3}{7}\cdot\dfrac{-1}{10}=\dfrac{-3\cdot(-1)}{7\cdot10}=\dfrac{3}{70}$
  1. $\dfrac{-5}{18}$
  2. $\dfrac{3}{70}$
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