ICSE Class X Math 2015 Solved Paper
© examsnet.com
Question : 3
Total: 52
Solve the following inequation and write the solution set :
13 x − 5 < 15 x + 4 < 7 x + 12 , x ∈ R
Represent the solution on a real number line.
Represent the solution on a real number line.
Solution:
Given: 13 x − 5 < 15 x + 4 < 7 x + 12
⇒ 15 x + 4 > 13 x − 5 and 15 x + 4 < 7 x + 12
⇒ 15 x − 13 x > − 5 − 4
⇒ 2 x > − 9
⇒ x >
or − 4.5
15 x − 7 x < 12 − 4
8 x < 8
x < 1
Solution : { x : 4 . 5 < x < 1 , x ∈ R }
© examsnet.com
Go to Question: