Jevon Tan Jing Hong's answer to Ganney's Secondary 4 A Maths question.

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Jevon Tan Jing Hong
Jevon Tan Jing Hong's answer
3 answers (A Helpful Person)
1st
use subsistuition method
Ganney
Ganney
7 years ago
Wow. Thanks! Didn't know there's a method for this. :)