60/x≥12
    x^（1/3）＜1
    x^（1/3）＞1
    1+3x
    abs ( x + 1 ) - abs ( x - 3 ) >-4
    abs(x+3)+abs(2*x-3)>3
    1+x＞2
    m+3≤2m-1
    3x+2＞2
    9.8(cos(45−x)+0.65sin(45−x))>0
    X+7大于100 X-7小于90
    X+7大于100 X-7小于90
    5^1/x大于0
    1093200－50000－450000－X≥300000
    0＜x*x*x-x-5
    (1800x+1040*0.05-721.555556)*3.5*1.085*1.2*0.8＜(1800+1040*0.05-721.555556)*3.5*(1.085*(1+0.01x))*1.2*0.8
    (x+1040*0.05-721.555556)*3.5*1.085*1.2*0.8＜(1800+1040*0.05-721.555556)*3.5*(1.085*(1+0.01x))*1.2*0.8
    (x+1040*0.05-721.555556)*3.5*(1.085*(1+0.01x))*1.2*0.8＜(1600+1040*0.05-721.555556)*3.5*(1.085*(1+0.01x))*1.2*0.8
    (x+1040*0.05-721.555556)*3.5*(1.085*(1+0.01x))*1.2*0.8＜(1800+1040*0.05-721.555556)*3.5*(1.085*(1+0.01x))*1.2*0.8
    (x+1040*0.05-721.555556)*3.5*(1.085*(1+0.01x))*1.2*0.8＜(x+1040*0.05-721.555556)*3.5*(1.085*(1+0.01x))*1.2*0.8

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