Mathematics
Grade10
Easy
Question
Solve 12 < 2x < 28
- 6 < x < 28
- 3 < 2x < 14
- 12 < x < 14
- 6 < x < 14
Hint:
An inequality is a relation which makes a non-equal comparison between two numbers or other mathematical expressions
The correct answer is: 6 < x < 14
The compound inequality 12 < 2x < 28 involves “and.”
Solving 12 < 2x
6 < x
x > 6
Solving 2x < 28
x < 14
So, the solution of the inequality given is “x > 6 and x < 14” or “6 < x < 14.”
Inequality reversed, if we multiply both side by -1
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