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A+B=150,A除以B等于三分之二,求A和B
人气:307 ℃ 时间:2019-12-24 08:30:22
解答
A/B=2/3```````````````````````A =(2/3)x B
A+B=(2/3 +1)x B =5/3 x B=150 ``````````````B=90 A=60
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