Solving Double Inequalities
Maths: Edexcel A Level Pure Maths, topic 2.3.2
Double Inequalities
Solve -3 < x⁄2 +3 ≤ 4:
Write the inequality
Multiply both sides and the middle by 2
- This is to get rid of the fraction.
Subtract 6 from both sides and the middle
This is our solution
- We always want x on its own in the middle.