Wang Mengzhe's answer to Kathy's Secondary 4 E Maths Singapore question.
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
I used some of the rules without mentioning them. They should be part of your knowledge. If you couldn't understand some of the steps please go back to the basic rules and take a look.
Date Posted:
5 years ago
360 Tutoring Program