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数学
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5y-6分之5=12分之5,y等于
人气:108 ℃ 时间:2020-07-05 07:07:47
解答
5y-5/6=5/12 两边同除以5 ----y-1/6=1/12---
y=1/6+1/12
=3/12
=1/4
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