x²-5x+2= 0
    21679.45=[(220+220)*63-x]*0.85+8*63
    (x^2-16)/8+x/20=278
    10x²-17x=0
    1.25*(1+5100/X)=10
    2x²-x-12=0
    -2/3x²+1/3x+4=0
    11169.15=（220*63-x）*0.95
    d∧3＋4×d∧2＋5×d＋3＝0
    200*0.0793+x*0.0293=（200+x）*0.033
    200*7.93%+x
    -1/9（x-6）²+4 = 1
    x+x*0.09=6413686.51
    m^3-18m-8=0
    1-In x
    x^2-2001*x+1000=0
    x+5x/10=6000
    X-X/1.03*0.05-X/1.03*0.03=58849.56
    X-X/1.03*0.05-X/1.03*0.03=58849.56
    X-X/1.03*0.05-X/1.03*0.03=58849.56

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