Heng Guo Jun's answer to Norain's Primary 6 Maths Geometry Singapore question.

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Heng Guo Jun
Heng Guo Jun's answer
9 answers (Tutor Details)
1st
I used a substitution method to get the answer, not too sure if you can apply this at Primary 6. Do let me know if you haven’t learn this! I’ll come up with another solution