作业帮解方程 [(81+83+85+87+89)/(82+84+86+88+90)]:x=(1/25):(86/170)
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![解方程 [(81+83+85+87+89)/(82+84+86+88+90)]:x=(1/25):(86/170)](/uploads/image/z/205404-60-4.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B+%5B%2881%2B83%2B85%2B87%2B89%29%2F%2882%2B84%2B86%2B88%2B90%29%5D%3Ax%3D%281%2F25%29%3A%2886%2F170%29)
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解方程 [(81+83+85+87+89)/(82+84+86+88+90)]:x=(1/25):(86/170)
解方程 [(81+83+85+87+89)/(82+84+86+88+90)]:x=(1/25):(86/170)
解方程 [(81+83+85+87+89)/(82+84+86+88+90)]:x=(1/25):(86/170)
[(81+83+85+87+89)/(82+84+86+88+90)]:x=(1/25):(86/170)
5*85/（5*86）：X＝170：（25*86）
170X＝85/86*86/25
X＝1/50