解下列不等式 -x⼀5+x⼀15≤-1 1⼀3x-2<1-1⼀5x x-(3x-1)≤x+2

2024-12-15 07:07:40
推荐回答(1个)
回答1:

1. -x/5+x/15≤-1 ; (-3+1)x/15≤-1; -2x≤-15,; x>=15/2;
2. 1/3x-2<1-1/5x ; (1/3+1/5)x<3; (8/15)x<3; x<45/8
3. x-(3x-1)≤x+2; -3x≤1; x>=-1/3