解不等式组 x-4≤3(x-2),1+2x/3>x-1; 3-2x≥0 ,2x-7≤4x+7; 3(x+4)-2 ≥5x-4(1-1
问题描述:
解不等式组 x-4≤3(x-2),1+2x/3>x-1; 3-2x≥0 ,2x-7≤4x+7; 3(x+4)-2 ≥5x-4(1-1
解不等式组 x-4≤3(x-2),1+2x/3>x-1;
3-2x≥0 ,2x-7≤4x+7;
3(x+4)-2 ≥5x-4(1-1/2x),5-(2x-3)>6x;
x-2(x-2)≤2,1-2x/4<1-x
答
1.x>=1;x2.x=-7;综上:-73.x4.x>=2;如果我猜得没错,题目应该是(1-2x)/4<1-x,解得x