Metta's answer to claire chen's Junior College 1 H2 Maths question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Metta
Metta's answer
4 answers (Tutor Details)
1st
Trick is to use addition/subtraction to move everything to one side since multiplication/division need change sign.

At the end, test out different values to see which range fits the criteria.