What is the opposite and reciprocal of pi-3?

The opposite is what makes ##0## when added The reciprocal is what makes ##1## when multiplied

Opposite: Usually you 'flip' the signs: ##-pi+3## because ##(pi-3)+(-pi+3)=0##

Reciprocal: Usually you make numerator and denominator change places. (Think of ##pi-3## as ##(pi-3)/1##) Then the reciprocal will be: ##1/(pi-3)## because ##(pi-3)/1*1/(pi-3)=1##