2x=5x=10则1/x+1/y=?
y表示平方后面个是y打错了,题目是2x=5y=10,求1/x=1/y
人气:170 ℃ 时间:2020-06-18 16:37:46
解答
2x=5y=10
x=5 y=2
1/x+1/y
=1/2+1/5
=(5+2)/10=7/10
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