Arnold K H Tan's answer to #Maths#is#fun#'s Secondary 1 Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Arnold K H Tan
Arnold K H Tan's answer
873 answers (A Helpful Person)
1st
You will need to use laws of indices to solve this, typically taught in Secondary 3.