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
    (0.01+0.01+1078x)*1079/2=30000
    3x + 4x + 16 = 1.5 × (5x + 8)
    -6 k+3=0
    -1.6775*x^4+32.112*x^3-228.585*x^2+716.06*x-831.75=0
    -1.6775*x^4+32.112*x^3-228.585*x^2+716.06*x-831.75=0
    0.2428*x^3-3.5439*x^2+16.2726*x-23.364=0
    0.2428x3-3.5439x2+16.2726-23.364=0
    y=2
    11×x^2-13×x-2=0
    50x=40x-80
    （1.5-x）*50=（2-x）*40

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