DeAndre Lim Hai Jie's answer to question 7a's Secondary 2 Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
DeAndre Lim Hai Jie
Deandre Lim Hai Jie's answer
23 answers (Tutor Details)
hope this helps :) let me know if further clarification is needed