Question
Simplify: $\frac{5}{-18}\times\frac{-9}{20}$
✓
Answer
$\frac{5}{-18}\times\frac{-9}{20}$
$\frac{5}{-18}=\frac{5\times(-1)}{-18\times(-1)}$
$=\frac{-5}{18}$
$\therefore\frac{-5}{18}\times\frac{-9}{20}$
$=\frac{(5)\times(-9)}{18\times20}$
$=\frac{(-1)\times(-1)}{2\times4}$
$=\frac{1}{8}$
$\frac{5}{-18}=\frac{5\times(-1)}{-18\times(-1)}$
$=\frac{-5}{18}$
$\therefore\frac{-5}{18}\times\frac{-9}{20}$
$=\frac{(5)\times(-9)}{18\times20}$
$=\frac{(-1)\times(-1)}{2\times4}$
$=\frac{1}{8}$
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