Poh Hee Zhi (Wayne)'s answer to Ng zhi xian's Secondary 3 E Maths question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Poh Hee Zhi (Wayne)
Poh Hee Zhi (wayne)'s answer
12 answers (Tutor Details)
1st