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Multiply and divide rational numbers
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Learn it Multiply or divide as with fractions, then decide the sign: same signs → positive, different signs → negative.
Example: $-\frac{4}{5} \div \frac{2}{3}$
- Multiply by the reciprocal: $-\frac{4}{5} \times \frac{3}{2}$.
- $= -\frac{12}{10} = -\frac{6}{5}$.
- Different signs, so the answer is negative: $-1\frac{1}{5}$.
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