If i simply right this all down with a1b1c1 etc, will this be a valid proof? Or is there some quick way to prove it I am not seeing.
edit : I have proved it by writing it out the long way, but is there a quicker method?
If i simply right this all down with a1b1c1 etc, will this be a valid proof? Or is there some quick way to prove it I am not seeing.
edit : I have proved it by writing it out the long way, but is there a quicker method?