48+(1/48+1/70)x=248

题目详情

48+(1/48+1/70)x=248

▼优质解答

答案和解析

48+(1/48+1/70)x=248
(1/48+1/70)x=248-48
(1/48+1/70)x=200
x=200/(1/48+1/70)
=200*48*70/(48+70)
=336000/59

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