3 3per7 dikurangi 3 per 9
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Penjelasan dengan langkah-langkah:
[tex]3 \frac{3}{7} - \frac{3}{9} = \frac{3 \times 7 + 3}{7} - \frac{3}{9} \\ \\ = \frac{27}{7} - \frac{3 \div 3}{9 \div 3} \\ \\ = \frac{27 \times 3}{7 \times 3} - \frac{1 \times 7}{3 \times 7} \\ \\ = \frac{72 - 7}{21} \\ \\ = \frac{65}{21} [/tex]
