Jiayang's answer to Joanne Lim's Secondary 2 Maths question.
Hey Jiayang, yes it's me, the one whom you corrected yesterday. May I know, what app do you use to write your notes on screen like how you always present your answer? Looks cool. :)
Hey Mikhael, I use an app called Notability. You gotta purchase it though. Cheers :)
Thanks man!
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