(X-9y)/(6xy^2-(x+3y)/(9x^2y)

题目详情

▼优质解答

答案和解析

3x(x-9y)/18x²y²-2y(x+3y)/18x²y²
=(3x²-27xy-2xy-6y²)/18x²y²
=(3x²-29xy-6y²)/18x²y²

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