simplify: �ã5 PLUS�ã20 MINUS�ã27 PLUS�ã147

Answer 1

I am going to make a wild guess that you mean

?5 + ?20 - ?27 + ?147 which is
= ?5 + 2?5 - 3?3 + 7?3
= 3?5 + 4?3

Answer 2

those ?'s came up as square root signs on my new Apple computer but on my PC they now show up as a question mark, go figure.

they should be square root symbols,