Tayng's answer to Sher's Secondary 4 E Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Tayng
Tayng's answer
1093 answers (A Helpful Person)
1st
-1 means 1 divided by the whole thing
ie can just flip the fraction
If no fraction then just 1/ [ Expression]