CH Wong's answer to universe's Secondary 4 A Maths Singapore question.

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CH Wong
Ch Wong's answer
148 answers (Tutor Details)
An alternative approach.
Eric Nicholas K
Eric Nicholas K
3 years ago
Omg I forgot that 70 - 25 = 45.

I went to look for all other combinations but not this one.
CH Wong
CH Wong
3 years ago
Haha we are, after all, just humans.