63*x*x-140x+60=0
    0.5s^2+1.5s+1
    3270=V+0.0305V+577+17.31+130.8+0.0319V+11.15+172.98+87.01
    [（X-180）*(1-0.25)]/1610=[(X-170)*(1-0.25）-258.8]/1210
    （X-126.400）*10-1-1=2
    100*x*222.64/(x*222.64+(1-x)*0.5*335.17)=92.419
    100*x*222.64/(x*222.64+(1-x)*0.5*335.17)=90.016
    x∧2－x＝－9/16
    6x-35=13
    2sinx=1
    2x=1
    X（3+2）=55
    X=48664-(1879+17.8%X)
    X=46708-(1753+17.8%X)
    X=46708-(1879+17.8%X)
    (x-x/1.13*0.1)/7.17=0.477
    2b^3+84b^2+342b-11340=0
    (x-x/1.13*0.1)/7.17=1.668
    X=61375-(1879+17.8%X)
    (x-x/1.13*0.1)/7.17=0.347

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