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2019年春七年级数学下册第9章分式9.2分式的运算第1课时分式的乘除教学课件（新版）沪科版.pptx

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第9章 分 式,9.2 分式的运算,17.有甲、乙两筐水果,甲筐水果重( x-1 )2千克,乙筐水果重( x2-1 )千克( 其中x1 ),售完后,两筐水果都卖了50元. ( 1 )哪筐水果的单价卖得低? ( 2 )高的单价是低的单价的多少倍?,

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