问题描述:
.x-y/2x+y/2x和5/x-5+x/5-x
x-y/2x+y/2x
5/x-5+x/5-x
5x/x²2xy+y²-5y/x²2xy+y²
x²/x²-y²-2xy/x-y+y²/x²-y²
x-y/2x+y/2x
5/x-5+x/5-x
5x/x²2xy+y²-5y/x²2xy+y²
x²/x²-y²-2xy/x-y+y²/x²-y²
问题解答:
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