2+x+3>3x
    6x-14<5x-10
    x<15-4x
    12x+5x>3x-8
    2^(x-1)>=x+48
    x-(4x-1)/3<1
    2x+3≤3
    （a+1）^-1/3＜（3-2a）^-1/3
    (3-2m)^1/2＞(m+1)^1/2
    （a+1）^(-1/3)＜（3-2a）^(-1/3)
    1.25x-2＜3.25x+1
    10-4(x-4)<2(x-1)
    10-4（x-4）<2(x-1)
    1-4x＜9
    2x-5＜1
    3x＜-12
    3（x+1）
    5+5+4.97*200*(1+x)*0.001<2x*4.97*200
    5+5+4.97*300*(1+x)*0.001<2x*4.97*300
    5+5+4.97*600*(1+x)*0.001<2x*4.97*600

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