Well you can say m+n=m+p and then add the additive inverse of m to both sides and continue
The Art of Proof has this exact proof outlined on the home page funny enough, it references another proposition so be sure to click the link in the proof
Well you can say m+n=m+p and then add the additive inverse of m to both sides and continue
The Art of Proof has this exact proof outlined on the home page funny enough, it references another proposition so be sure to click the link in the proof