1.56=(50.24-156.19+x+((50.24-156.19+x)/(14+134))*(-254)+25.77)/(14+134-254+74)
    0.6cosa+12.5sina=0.75
    x*99.975%-120.106*100.025%=0.5/10
    x*99.975%-120.106*100.025%=2/10
    x*99.975%-120.106*100.025%=1/10
    x1/4
    tanx=x
    3x^2-9x=0
    3x2-9x=0
    [2x^2-sqrt(37)x+35/4]^2+9-2x^2
    35x^2-6sqrt(37)x+333
    （1/2）x=（1/5）
    （5/14）x=（360/7）
    （X+24）÷0.875+24=1.5x
    15-3x=5x+5
    x^3-4x^2+12x-64=0
    8x+(150+x)-(150-x)-(300-x)=0
    x/0.09+(47778.05-x)/0.13=445268.43
    x/0.09+(47778.05-x)/0.13=559115.93
    6x-x^2

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