medium Set 51 Form Exercise

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            "numerator1": 3,
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            "question": "3/5 × 3/4 = ?",
            "answer": "9/20",
            "correctAnswer": "9/20",
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            "subType": "add",
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            "correctAnswer": "2/3",
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            "numerator1": 6,
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            "question": "6/7 ÷ 4/7 = ?",
            "answer": "3/2",
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            "numerator1": 4,
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            "answer": "15/14",
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            "denominator1": 8,
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            "question": "Simplify 12/32 = ?",
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            "numerator1": 2,
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            "answer": "5/3",
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            "correctAnswer": "5/21",
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            "subType": "divide",
            "numerator1": 3,
            "denominator1": 4,
            "numerator2": 1,
            "denominator2": 3,
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            "answer": "9/4",
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            "numerator1": 1,
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            "answer": "1/3",
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            "subType": "subtract",
            "numerator1": 3,
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            "question": "3/7 - 2/6 = ?",
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            "question": "Simplify 3/12 = ?",
            "answer": "1/4",
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