求 一元一次不等式

来源：百度知道 编辑：UC知道 时间：2024/05/31 14:19:07
(1)6-2x>0;
(2)5x-1<9x+7;
(3)2(1-3x)>3x+20;
(4)5x<200;
(5)3x+8<7x-12;
(6)2-x<1;
(7)3(x+1)>2x;
(8)5+3x>240;
(9)3-x<2x+6;
(10)4(x-1)+2>3(x+2)-x

(1)6-2x>0;
2x<6
x<3

(2)5x-1<9x+7;
4x>-8
x>-2

(3)2(1-3x)>3x+20;
2-6x>3x+20
9x<-18
x<-2

(4)5x<200;
x<40

(5)3x+8<7x-12;
4x>20
x>5

(6)2-x<1;
x>1

(7)3(x+1)>2x;
3x+3>2x
x>-3

(8)5+3x>240;
3x>235
x>235/3

(9)3-x<2x+6;
3x>-3
x>-1

(10)4(x-1)+2>3(x+2)-x
4x-4+2>3x+6-x
4x-2>2x+6
2x>8
x>4

1.
2x<6 => x<3

2.
5x-1<9x+7
-4x<8
x>-2

3.
2(1-3x)>3x+20
2-6x>3x+20
-9x>18
x<-2

4.
5x<200
x<40

5.
3x+8<7x-12
-4x<-20
x>5

6.
2-x<1
-x<-1
x>1

7.
3(x+1)>2x
3x+3>2x
x>-3

8.
5+