2x>1
    (2/3)x^2≤0.5x^2+0.75x(7/4)-3.5x-(5/4)
    (2/3)x^2≥0.5x^2+0.75x(7/4)-3.5x-(5/4)
    x^2≥0.75x(7/4)-3.5x-(5/4)
    0.5x^2≥0.75x(7/4)-3.5x-(5/4)
    0.5x^2+（3/4）x^(7/4)-(3/2)x-(5/4)
    3x^（7/4）≥x^2-x＋5=
    3x^（0.75）≥x^2-x＋5=
    x+1>6-3x+3
    x+1/6>1-x+1/2
    2(x+1/2)<3(x+2/3)
    -3x-3＞11 -2/3x≤3x 3x-2x＞5 1+x＜2x+3 2x-1＜4x+12 2x-2＞3x-4 3x+2＞2(x-1)
    3x+2＞-1 -3x＜12 2x-6＞0 3x-5＞13 3x+2≥5 1-2x＜0 2x-2≤7 -3x-3＞11 -2/3x≤3x 3x-2x＞5 1+x＜2x+3 2x-1＜4x+12 2x-2＞3x-4 3x+2＞2(x-1)
    3x+2＞-1 -3x＜12 2x-6＞0 3x-5＞13 3x+2≥5 1-2x＜0 2x-2≤7 -3x-3＞11 -2/3x≤3x 3x-2x＞5 1+x＜2x+3 2x-1＜4x+12 2x-2＞3x-4 3x+2＞2(x-1)
    3x+2＞-1 -3x＜42
    j−1.5>1
    12<2.5c+1
    −3a+7<28
     b−2≤−8b+25
    2t≥−3t−30

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