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数学
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解方程 60x/(60x+132*60)=45%
人气:297 ℃ 时间:2020-06-03 04:35:03
解答
60x/(60x+132*60)=45%
60x=0.45*60x+0.45*132*60
60x=27x+3564
33x=3564
x=3564÷33
x=108
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