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<!DOCTYPE html>
<html data-require="math math-format">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Multiplying fractions 0.5</title>
<script src="../khan-exercise.js"></script>
<div class="exercise">
<div class="vars" data-ensure="getGCD(A, B) === 1 && getGCD(C, D) === 1">
<var id="A">randRange(1, 8)</var>
<var id="B" data-ensure="B>A">randRange(2, 9)</var>
<var id="C">randRange(1, 8)</var>
<var id="D" data-ensure="D>C">randRange(2, 9)</var>
<div class="problems">
<div class="question">
<p><code>\displaystyle \frac{<var>A</var>}{<var>B</var>} \times \frac{<var>C</var>}{<var>D</var>}</code></p>
<div class="solution" data-type="rational"><var>(A * C) / (B * D)</var></div>
<div class="hints">
<p><code>\displaystyle {} = \frac{<var>A</var> \times <var>C</var>}{<var>B</var> \times <var>D</var>}</code></p>
<p><code>\displaystyle {} = \frac{<var>A * C</var>}{<var>B * D</var>}</code></p>
<p data-if="getGCD(A * C, B * D) !== 1"><code>\displaystyle {} = <var>fractionReduce(A * C, B * D)</var></code></p>
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