4(3x-1)<5(2x+1) x-2/3<等于2-x 1-x/3<等于1-2x/7 1-4x-3/2>等于5/6-4/3x 解下列不等式,并把它们的解集分别表示在数轴上

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4(3x-1)<5(2x+1) x-2/3<等于2-x 1-x/3<等于1-2x/7 1-4x-3/2>等于5/6-4/3x 解下列不等式,并把它
们的解集分别表示在数轴上


(1)4(3x-1)<5(2x+1)
12x-4<10x+5
12x-10x<5+4
2x<9
∴x<9/2.
(2)x-2/3≤2-x
3x-2≤6-3x
6x≤8
x≤3/4.
(3)(1-x)/3≤(1-2x)/7
7(1-x)≤3(1-2x)
7-7x≤3-6x
7x-6x≥7-3
x≥4.
(4)1-4x-3/2≥5/6-4x/3
6-24x-9≥5-8x
24x-8x≤6-9-5
16x≤-8
x≤-1/2

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