2x+y=-1① -2x+4<0① 3x+2y=6①x-1/4+2-x/3=1 5x-2y=11② 6x+3<13-4+3x x-2/3≥1② 5x-4z=3② 2y+4z=7③x-1/4+2-x/3=1 2x+y=-1① 6x+3<13-4+3x -2x+4<0① 3x+2y=6①5x-2y=11② x-2/3≥1② 5x-4z=3②2y+4z=7③上面的都不是 这些才是
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![2x+y=-1① -2x+4<0① 3x+2y=6①x-1/4+2-x/3=1 5x-2y=11② 6x+3<13-4+3x x-2/3≥1② 5x-4z=3② 2y+4z=7③x-1/4+2-x/3=1 2x+y=-1① 6x+3<13-4+3x -2x+4<0① 3x+2y=6①5x-2y=11② x-2/3≥1② 5x-4z=3②2y+4z=7③上面的都不是 这些才是](/uploads/image/z/5900088-48-8.jpg?t=2x%2By%3D-1%E2%91%A0+-2x%2B4%EF%BC%9C0%E2%91%A0+3x%2B2y%3D6%E2%91%A0x-1%2F4%2B2-x%2F3%3D1+5x-2y%3D11%E2%91%A1+6x%2B3%EF%BC%9C13-4%2B3x+x-2%2F3%E2%89%A51%E2%91%A1+5x-4z%3D3%E2%91%A1+2y%2B4z%3D7%E2%91%A2x-1%2F4%2B2-x%2F3%3D1+2x%2By%3D-1%E2%91%A0+6x%2B3%EF%BC%9C13-4%2B3x+-2x%2B4%EF%BC%9C0%E2%91%A0+3x%2B2y%3D6%E2%91%A05x-2y%3D11%E2%91%A1+x-2%2F3%E2%89%A51%E2%91%A1+5x-4z%3D3%E2%91%A12y%2B4z%3D7%E2%91%A2%E4%B8%8A%E9%9D%A2%E7%9A%84%E9%83%BD%E4%B8%8D%E6%98%AF+%E8%BF%99%E4%BA%9B%E6%89%8D%E6%98%AF)
2x+y=-1① -2x+4<0① 3x+2y=6①x-1/4+2-x/3=1 5x-2y=11② 6x+3<13-4+3x x-2/3≥1② 5x-4z=3② 2y+4z=7③x-1/4+2-x/3=1 2x+y=-1① 6x+3<13-4+3x -2x+4<0① 3x+2y=6①5x-2y=11② x-2/3≥1② 5x-4z=3②2y+4z=7③上面的都不是 这些才是
2x+y=-1① -2x+4<0① 3x+2y=6①
x-1/4+2-x/3=1 5x-2y=11② 6x+3<13-4+3x x-2/3≥1② 5x-4z=3②
2y+4z=7③
x-1/4+2-x/3=1 2x+y=-1① 6x+3<13-4+3x -2x+4<0① 3x+2y=6①
5x-2y=11② x-2/3≥1② 5x-4z=3②
2y+4z=7③
上面的都不是 这些才是
2x+y=-1① -2x+4<0① 3x+2y=6①x-1/4+2-x/3=1 5x-2y=11② 6x+3<13-4+3x x-2/3≥1② 5x-4z=3② 2y+4z=7③x-1/4+2-x/3=1 2x+y=-1① 6x+3<13-4+3x -2x+4<0① 3x+2y=6①5x-2y=11② x-2/3≥1② 5x-4z=3②2y+4z=7③上面的都不是 这些才是
3(5-4x)=9
化简,得:15-12x=9
移项,得:-12X=9-15;
-12x=-6
两边同时除以-12,得:x=0.5
5分之2(1-0.375x)=15分之4
两边同时乘以15,得:3(1-0.375x)=4
化简,得:3-2.25x=4;
移项,得:0.75x=4-3;
0.75x=1
两边同时除以0.75,得:x=3分之4
以上回答你满意么?