问一道数学算式 (87x+72x-81)/(3x-9)(87x+72x-81)/(3x-9)(87x+72x-81)/(3x-9)(87x+72x-81)/(3x-9)(87x的2次方+72x-81)/(3x-9)

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问一道数学算式 (87x+72x-81)/(3x-9)(87x+72x-81)/(3x-9)(87x+72x-81)/(3x-9)(87x+72x-81)/(3x-9)(87x的2次方+72x-81)/(3x-9)
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问一道数学算式 (87x+72x-81)/(3x-9)(87x+72x-81)/(3x-9)(87x+72x-81)/(3x-9)(87x+72x-81)/(3x-9)(87x的2次方+72x-81)/(3x-9)
问一道数学算式
(87x+72x-81)/(3x-9)
(87x+72x-81)/(3x-9)
(87x+72x-81)/(3x-9)
(87x+72x-81)/(3x-9)
(87x的2次方+72x-81)/(3x-9)

问一道数学算式 (87x+72x-81)/(3x-9)(87x+72x-81)/(3x-9)(87x+72x-81)/(3x-9)(87x+72x-81)/(3x-9)(87x的2次方+72x-81)/(3x-9)
=(159x-81)/(3x-9)
=(159x-477+396)/(3x-9)
=53+396/(3x-9)