10x+10(10－x)≥100
    10x+10(10－x)≥80
    12x+7(10－x)≥80
    2x-1>1-x-1÷2
    4x-2>1-x-1÷2
    x x+15>2(x－3)
    （2-7*x）*（x+4）>0
    7.5a+6(20-a)≤135 7.5a+6(20-a)≥129
    4x+9(300-x)≥1795
    15x+30(300-x)≤6300
    x-1.5(2x-1)≥4
    (X/24 )x1.2x（24x4）+(X/24)x(1.5X6x10)+X=8000
    2x+1/3>x－1 x－3（x－2）>=4
    1-x/3小于等于5/6
    1/3-x小于等于5/6
    26700+x-x*10%/12*3≥50000
    26700+w*(1-10%/4)=50000
    26700+w*(1-10%/4)≥50000
    10x+15(80-x)<900
    （87－4x）x3＝69＋x

Home page << page1216 page1217 page1218 page1219 page1220 ... ... page1231page page1232page page1233page page1234page page1235page >> Last page 1275 pages in total