(1)-2/3(x+1)>-2 (2)[(2x+1)/-2]-[(x-3)/3]>2 (3)(2x-3)/-3>(-3x-2)/2 (1)[(2x-1)/3]-[(5x+10]小于等于1(2)[(3x-2)/3]-[(9-2x)/3小于等于【(5x+1)/2】(3)1/2(x-1)
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/07 22:42:18
(1)-2/3(x+1)>-2 (2)[(2x+1)/-2]-[(x-3)/3]>2 (3)(2x-3)/-3>(-3x-2)/2 (1)[(2x-1)/3]-[(5x+10]小于等于1(2)[(3x-2)/3]-[(9-2x)/3小于等于【(5x+1)/2】(3)1/2(x-1)
(1)-2/3(x+1)>-2 (2)[(2x+1)/-2]-[(x-3)/3]>2 (3)(2x-3)/-3>(-3x-2)/2
(1)[(2x-1)/3]-[(5x+10]小于等于1
(2)[(3x-2)/3]-[(9-2x)/3小于等于【(5x+1)/2】
(3)1/2(x-1)
(1)-2/3(x+1)>-2 (2)[(2x+1)/-2]-[(x-3)/3]>2 (3)(2x-3)/-3>(-3x-2)/2 (1)[(2x-1)/3]-[(5x+10]小于等于1(2)[(3x-2)/3]-[(9-2x)/3小于等于【(5x+1)/2】(3)1/2(x-1)
(1)[(2x-1)/3]-[(5x+10]≤1
2x-1-3(5x+10)≤3
2x-1-15x-30≤3
-13x≤34
x≥-34/13
(2)[(3x-2)/3]-[(9-2x)/3≤【(5x+1)/2】
(5x-11)/3≤(5x+1)/2
2(5x-11)≤3(5x+1)
10x-22≤15x+3
-5x≤25
x≥-5
(3)1/2(x-1)
(4)1/2[x-1/2(x+1)]≤2/5(x-1)
1/2[1/2x-1/2]≤2/5x-2/5
1/4x-1/4≤2/5x-2/5
5x-5≤8x-8
-3x≤-3
x≥1
(5)3(x+1)/8+2<3-(x-1)/4
...
全部展开
(4)1/2[x-1/2(x+1)]≤2/5(x-1)
1/2[1/2x-1/2]≤2/5x-2/5
1/4x-1/4≤2/5x-2/5
5x-5≤8x-8
-3x≤-3
x≥1
(5)3(x+1)/8+2<3-(x-1)/4
3(x+1)+16<24-2(x-1)
3x+3+16<24-2x+2
5x<7
x<1.4
(6)(0.4x+0.9)/0.5-(0.03+0.02x)/0.03>(x-5)/2
(4x+9)/5-(3+2x)/3>(x-5)/2
6(4x+9)-10(3+2x)>15(x-5)
24x+54-30-20x>15x-75
-11x>-99
x<9
收起