bu ratna membeli beras 17 1/2kg kemudian dimasak 9 3/4 kg kemudian membeli lagi 2 1/4kg beras yg tersisa adalah....
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Penyelesaian:
17½-9¾+2¼
=35/2-39/4+9/4
=35/2-30/4
=70/4-30/4
=40/4
=10kg
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