46*cos(X)+(sin(x)*sin(x)-cos(x)*cos(x))*(-7.211202495)-2*sin(x)*cos(x)*39.06863364=0
    46*cos(X)+(sin(x)*sin(x)-cos(x)*cos(x))*20.42065651-2*sin(x)*cos(x)*39.06863364=0
    X/20+X/30+X/42=3
    X/20+X/30+X/42=3
    X/20+X/30+X/42=3
    46*cos(X)+(sin(x)*sin(x)-cos(x)*cos(x))*14.47300637-2*sin(x)*cos(x)*42.49889596=0
    1/2*x-5=3*x-2
    2*x^2*3.14-arccos(30/x) / 360 * 2 * 3.14 * x^2 + sqrt(x^2 - 900) * x / 2 = 5800
    （27—x）*6=(23—x)*9
    （2552534-x）/x=-0.8955
    X-X*0.002=14970
    X-X*0.001=14985
    X-X*0.003=14955
    X-Xx0.003=14955
    X-3X÷1000=14955
    x×0.17＋x＝16121
    x×0.1＋x＝110
    185494 + 46397 + 3620 * 95 + 9214 * 12 + x * 83 = 95 * 11779
    185494 + 46397 + 3620 * 95 + 9214 * 12 + x * 83 = 1131735
    185494 + 46397 + 3620 * 95 + x * 95 = 1131735

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