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    x+x/5=120
    x+x/5
    (4+x)*(9+x)=114
    (195+x)*x=-8775
    (195+x)*x=8775
    0.62x-0.09868sin(πx)+0.2418x-0.10075= 0.2122(sin(πx)^3)+0.0374sin(πx)+0.0374sin(π(1.25-2x))
    -2^(2*t+67) = (2*t+6.61) * ln2
    -2^(2*t-33) = (2*t-165.61) * ln2
    -2^(2*t-27) = (2*t-177.61) * ln2
    (67.06+5*x)÷5=(14+x)
    (67.06+5*x)/(14+x)=5
    (x^3+2x^2+3x+4)(x^2-5x+6)=(x^3-2x^2+3x-4)(x^2+5x+6)
    X+6=9
    (10960+3+X)*3.7%=4*X
    x÷(x+1)=0.98
    x÷(x-1)=0.98
    x÷(x-1)=0.98
    1050-1050X=610
    682.5-682.5X=386
    297.5-297.5X=342

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