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  1. anonymous
    • one year ago
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    Do you know it?

  2. idku
    • one year ago
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    \[\frac{2}{5}\div \frac{-3}{10}~~\Longrightarrow~~\frac{2}{5}\times \frac{10}{-3}\]

  3. idku
    • one year ago
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    you flip the fraction by which you divided, and instead of dividing by it, you multiply by it

  4. idku
    • one year ago
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    that works in any case, \[\frac{A}{B}\div \frac{C}{D}~~=~~\frac{A}{B}\times\frac{D}{C}\]

  5. idku
    • one year ago
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    can you proceed ?

  6. anonymous
    • one year ago
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    2/5/-3/10 = -1/75

  7. anonymous
    • one year ago
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    There is no implied grouping in this problem. The divisions are calculated from left to right.

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