合并同类项综合练习题118.docx
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合并同类项综合练习题118.docx
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合并同类项综合练习题118
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1175
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6175
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5757
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9f+3f+5f10y+7a-3y+5a
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15a2b-7b2c+21a2b+7b2c5n-8n2-8n+9n2+3
4975
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6
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5
2d+4d+8d9x-3e-6x-2e
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21x2y+7b2c-26x2y+5b2c3y+7y2-5y+10y2-9
6175
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