Solve and analyse the following compound inequality.
MATHEMATICS · Multi-part · A Level · Mathematics · Algebra and Functions · Algebra and Functions
Problem
Solve and analyse the following compound inequality.
(i) Solve 21<63x−4≤45, showing each algebraic step.
(ii) At every stage of your working, state whether the inequality signs remain the same or change, and give a brief reason for your answer.
(iii) Depict the final solution on a number line with correct open or closed endpoints.