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Question #a1fc0

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Answer 1 · 2017-10-11T17:42:18

$\frac{7}{10}$ $7/10$

Explanation:

$to simplify a fraction$ $"to simplify a fraction"$

$cancel any common factors$ $color(blue)"cancel"" any"color(blue)" common factors"$
$on the numerator/denominator$ $"on the numerator/denominator"$

$3 is a common factor to both 21 and 30$ $" 3 is a common factor to both 21 and 30"$

$\Rightarrow \frac{21}{30}$ $rArr21/30$

$=cancel(21)^7/cancel(30)^(10)larrcolor(red)" cancelling"$

$=7/10larrcolor(red)" in simplest form"$

A fraction is in simplest form when no other factor but 1 will divide into the numerator/denominator.

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