Question by Lê Quốc Trần Anh - Discuss with MathYouLike

Lê Quốc Trần Anh Coordinator

04/01/2018 at 17:54

For how many integer values of x is the following inequality true? -5 ≤ 2x – 7 ≤ 21

List of answers

Help you solve math 05/01/2018 at 10:49

We have :

-5 ≤ 2x - 7 ≤ 21

=> 2 ≤ 2x ≤ 28

=> 1 ≤ x ≤ 14

So there are: 14 - 1 + 1 = 14 numbers is true
Dao Trong Luan Coordinator 04/01/2018 at 18:02

-5 ≤ 2x - 7 ≤ 21

=> 2 ≤ 2x ≤ 28

=> 1 ≤ x ≤ 14

So there are: 14 - 1 + 1 = 14 numbers is true
FA Liên Quân Garena 08/01/2018 at 21:02

- 5 ≤ 2x - 7 ≤ 21

=> 2 ≤ 2x ≤ 28

=> 1 ≤ x ≤ 14

So there are: 14 - 1 + 1 = 14 numbers is true
Trần Phan Tuyết Như 05/01/2018 at 12:31

-5 ≤ 2x - 7 ≤ 21

=> 2 ≤ 2x ≤ 28

=> 1 ≤ x ≤ 14

Vì vậy, có: 14 - 1 + 1 = 14
Asuna Yuuki 04/01/2018 at 21:59

-5 ≤ 2x - 7 ≤ 21

=> 2 ≤ 2x ≤ 28

=> 1 ≤ x ≤ 14

So there are: 14 - 1 + 1 = 14 numbers is true

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