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Theory

$1$ divided by a fraction

1

is divided by a fraction, the result is the reciprocal of the fraction. The rule can be shown by rewriting

1

1 / 1

and use the rules for dividing fractions.

1 / \frac{3}{7} = \frac{1}{1} / \frac{3}{7} = \frac{1 \cdot 7}{1 \cdot 3} = \frac{7}{3}

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