解方程或解比例
①
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②3:8=24:x | ③
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④
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⑤x-
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⑥0.25+25%x=1.5; | ⑦
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⑧4.5x-
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①
|
②3:8=24:x | ③
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④
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⑤x-
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⑥0.25+25%x=1.5; | ⑦
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⑧4.5x-
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