0.2x-4.5/5=1.5
    -4/3x+4=0
    -3/4x+4=0
    60*3+3X+15=315
    sinx＝-1.6448
    sinx＝-1.6448
    16.8/X=14
    0.25x+8=0.1x+29
    2/3X=64×3/8X-4
    5t²-10t+1＝0
    2/3X=64×3/8-4
    0.01x＝0.5%
    x÷3＋4＝X÷4＋1
    x-（x*0.07）=270000
    x-（x*0.08）=270000
    y/3-[(y-1)/6]=1-[(2y)/3]
    【（x-1）/2】-【（x+1）/4】=2
    （x-1/2）-（x+1/4）=2
    36x^10-35x^8+35x^6+x^4=2500
    x^2+144/25=(x+9/5)^2

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