2000000*(1-1.56%)-8644-105035-300000-100000-(2000000/1.09*0.09-8644/1.13*0.13-300000/1.03*0.03-100000/1.09*0.09-105035/1.13*0.13-X/1.03*0.03)*1.12=X
    2000000*(1-1.56%)-513079-(2000000/1.09*0.09-8644/1.13*0.13-300000/1.03*0.03-100000/1.09*0.09-105035/1.13*0.13-X/1.03*0.03)*1.12=X
    x^5
    （x-1740.38）/X=0.05
    （x-1182.52）/X=0.03
    3x+4+5=6(x-5)
    x÷1500+x÷1200=9
    7x-6=2(3x+2)
    (22-x)+(23-x)+(16-x)+(20-x)=72-x
    81-x=72-x
    (x-1)÷7=(x-3)÷5
    2x+52+10=(2x+2×10)×2
    5x-8=(x-8)×13
    x+1/（1-x）+（x-1）/x=19/6
    9%÷x=1.8
    9%÷X=1.8
    （40÷X+8.5）÷（50÷X+6.8）=0.507÷0.493
    5（x^2）+36x-14=0
    x＾3-2x∧2-144 = 0
    x＾3-2x∧2-144 = 0

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