解不等式x-1+3x/2>-3 5x-12≤2(4x-3)②1-2(x-1)≤5 3x-2/2
人气:244 ℃ 时间:2020-03-22 18:55:55
解答
x-1+3x/2>-3
2x-2+3x>-6;
5x>-4;
x>-4/5;
5x-12≤2(4x-3)
5x-12≤8x-6;
3x≥-6;
x≥-2;
∴x>-4/5;
②1-2(x-1)≤5
1-2x+2≤5;
2x≥-2;
x≥-1;
3x-2/2
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