Balance Scale Mixed Hard — Set 42

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                "id": 4,
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                "id": 7,
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                "question": "If left side = 4 × 3, what does the right side equal to balance the scale?",
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                "id": 8,
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                "question": "If left side = 3 × 9, what does the right side equal to balance the scale?",
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                "id": 9,
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                "question": "If left side = 3 × 2, what does the right side equal to balance the scale?",
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                "id": 13,
                "type": "balance-scale",
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                "question": "If left side = 10 × 4, what does the right side equal to balance the scale?",
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                "id": 14,
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                "id": 18,
                "type": "balance-scale",
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                "id": 19,
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                "question": "Balance the scale: 8 + 4 = 1 + ?",
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