Banyak kantong plastik
[tex]10 \frac{1}{2} \div \frac{1}{2} \\ \\ \frac{21}{2} \times \frac{2}{1} \\ \\ 21 \: kantong[/tex]
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Banyak kantong plastik
[tex]10 \frac{1}{2} \div \frac{1}{2} \\ \\ \frac{21}{2} \times \frac{2}{1} \\ \\ 21 \: kantong[/tex]