五年级上学期数学第71题动脑筋每日精练答案
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人气:285 ℃ 时间:2020-07-02 19:27:21
解答
设102室本次的水表读数是x吨
(x-3102)*2.5=135
x-3102 =135/2.5
x-3102=56
x =56+3102
x =3158
答:102室本次的水表读数是3158吨.
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