(40+2x)(90+2x)×72%=3600
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(40+2x)(90+2x)×72%=3600(40+2x)(90+2x)×72%=3600(40+2x)(90+2x)×72%=3600
(40+2x)(90+2x)×72%=3600
(40+2x)(90+2x)×72%=3600
(40+2x)(90+2x)×72%=3600
300字读后感 2篇 俄把格式说一下吧:《xxxx》(写题目)主要内容:x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x(写那篇文章的主要内容)思考分析:x x x
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90X40=72%x(90+2x)x(40+2x)求解
90X40=72%x(90+2x)x(40+2x)求解
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