solve -5<x+1<14?
回答 (8)
2008-06-20 6:11 pm
✔ 最佳答案
-5< x+1 <14-6 < x < 13
x ∈ (-6,13)
2008-06-22 5:45 am
- 6 < x < 13
2008-06-21 1:29 am
-5 < x + 1< 14
-5 - 1 < x + 1 - 1 < 14 - 1
-6 < x < 13
Answer: -6 < x < 13
-5 - 1 < x + 1 - 1 < 14 - 1
-6 < x < 13
Answer: -6 < x < 13
2008-06-21 1:21 am
All you need to know is that the expression is shorthand for
-5 < x + 1 and x+1 < 14
Subtract 1 from both sides of the left to get
-5 - 1 < x + 1 - 1 -> -6 < x
Subtract 1 from both sides of the inequality on the right to get
x + 1 - 1 < 14 - 1
x < 13
Putting the two back together
-6 < x < 13
-5 < x + 1 and x+1 < 14
Subtract 1 from both sides of the left to get
-5 - 1 < x + 1 - 1 -> -6 < x
Subtract 1 from both sides of the inequality on the right to get
x + 1 - 1 < 14 - 1
x < 13
Putting the two back together
-6 < x < 13
參考: Longtime college math teacher
2008-06-21 1:13 am
subtract 1 from all sides
-6< x< 13
O----------------------------------O
<------------------------------------------->
-6 ...........................................13
it keeps messing up my line graph (and)
-6< x< 13
O----------------------------------O
<------------------------------------------->
-6 ...........................................13
it keeps messing up my line graph (and)
2008-06-21 1:12 am
-5 < x + 1 < 14
-5 - 1 < x < 14 - 1
-6 < x < 13
-5 - 1 < x < 14 - 1
-6 < x < 13
2008-06-21 1:12 am
-6<x<13
收錄日期: 2021-05-01 10:39:19
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