1. x-2<3
2. 2(x+1)>4
3. 7x-9>9x+7
4. x+3>2
Solve the following inequalities(show the step,plz)
2007-08-06 7:14 pm
回答 (1)
2007-08-06 7:27 pm
✔ 最佳答案
1. x-2<3x<3+2
x<5
2. 2(x+1)<4
2x+2<4
2x<4-2
2x<2
x<2/2
x<1
3. 7x-9>9x+7
7x>9x+7+9
7x>9x+16
7x-9x>16
-2x>16
x<16/(-2) (Since -1 will be put on the other side, so the inequality will be reverse)
x<(-8)
4. x+3>2
x>2-3
x>(-1)
收錄日期: 2021-05-01 14:53:36
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070806000051KK01279