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数学
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初一一道解方程
X/900+X/850=8又3/4
人气:262 ℃ 时间:2020-02-06 14:15:34
解答
x/900+x/850=35/4
x/225+2x/425=35
x/45+2x/85=7
17x+18x=5355
35x=5355
x=153
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