x-1=6
    X*100/80/1.05/125*100=42
    X*100/50/1.05/125*100=151
    X*100/50/1.05/125*100=121
    X*100/50/1.05/125*100=94
    X*100/50/1.05/125*100=72
    7log（5,36x+1)+27^x=23
    log（2，x）=1
    (2*x+4)*(2*x-4）/（2-x）*（6-x）=(2*x+2)*(2*x-2)/(3-x)*(5-x）
    （450/x）-1=450/（x+5）
    195*100/X/1/120*100=269
    X*100/60/1.05/174*100=230
    X*100/60/1.05/149*100=230
    X*100/60/1.05/125*100=230
    X*100/60/1/125*100=230
    X*100/45/1/149*100=269
    X*100/67/1/149*100=269
    X*100/41/1/149*100=230
    X*100/48/1/149*100=269
    66*100/41/1/X*100=108

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