（x-106.200）*10-1-1=2
    A-176658343.61-（A-150681321.92)*0.5%=51962.67
    （x-128.411）*10-1-1=2
    13.8+n×4.3
    X-X*0.065-(X+1127894)*0.0003=1127894
    sqrt(x+7)+sqrt(x+2)=sqrt(3*x+6)+sqrt(3*x+1)
    （lgx-lg4.35）*20=0.5
    （lg2-lg4.35）*40=x-14
    lgx=0.65
    12.14x=（x+3.5）×7.98
    （x-25+10）*0.6/（（x-25+10）*0.6+（180-x+15）*1.3＝24.6%
    x^2 + 5x + 6 = 0
    10000÷x+20000÷(x+60)=150
    X*(0.01*X+1)*(0.1*X+1)
    2x+38=(8/7)×(83.5+x)
    x×0.3%=120
    x÷0.3%=120
    2.463*(10^(-3))(x^4)+x-0.3162=0
    2.463*(x^4)+x-0.3162=0
    2x^2-80x+150=0

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