x+2=0
    tan0.5x＋tan0.02x ＝0
    0=-1/x^2+12/5x
    (y+2)÷2022+1=3y+12259387÷2022+6
    -2021÷2022+1=-2021×3+k
    x÷2022-1=0
    x(x－1)=4044
    x^2=2^x x=tanx 2^x=2x
    （30×4+20）×（100-x）+（30×3+20×4）×x=15000
    24*x^3+17*x^2+18*x-3=0
    x+x*1.15+x*1.15^2+x*1.15^3+x*1.75+x*2.01=202
    x+x*1.15+x*1.15^2+x*1.15^3+x*1.15^4+x*1.15^5=202
    x+x*1.15+x*1.15^2+x*1.15^3+x*1.15^4+x*1.15^5
    x=√1＋x∧2
    x*x+x-4=0
    √x+x=4
    m^2-2m=3/4
    143=（35-2x）x
    xx-5x+4=0
    440（1+x）(1+x)=633.6

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