X/135-4/340-10/500=0.00238(x+14)
    X/135-7.6/340-6/500=0.00238(x+13.6)
    (4x-5)^2=1
    x*(x+5)=37000
    π-arcsinx
    （2254+x）/254=(246+x)/246
    X/136-100/44.7-480/500-.48-240/1650=0.0028（1300+X）
    X/136-100/44.7-480/500-.48-240/1650=0.00237（1300+X）
    X/136-100/44.7-480/500-.48-240/1650=0.00238（1300+X）
    0.05601*x+0.032221=0.076
    0.05601*x+0.032221=0.088
    (25.343+x)×2.55＝50.687+69.33-x
    X/135-10/125-(100-X)/340=0.238
    X/135-5/125-(100-X)/340=0.238
    0.1261/x＝0.1289/0.86289
    0.4/100.58＝x/31.7
    （25.343+x）×2.65＝50.687+69.33-x
    (x-1)-(1-x)+(x+1)=
    （480*81-x）*0.85+(18+18)*81=32884
    （480*81-x）*0.85+(18+18)*81=2884

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