Answer: - 2 < x < 8/7
Step-by-step explanation:
The given expression is
I7x + 3I < 11
It can be written as
- 11 < 7x + 3 < 11
Subtracting 3 from all sides, it becomes
- 11 - 3 < 7x + 3 - 3 < 11 - 3
- 14 < 7x < 8
Dividing all sides by 7, it becomes
- 14/7 < 7x/7 < 8/7
- 2 < x < 8/7