Theorem 3com12d

Description: Commutation in consequent. Swap 1st and 2nd. (Contributed by Jeff Hankins, 17-Nov-2009)

	Ref	Expression
Hypothesis	3com12d.1	|- ( ph -> ( ps /\ ch /\ th ) )
Assertion	3com12d	|- ( ph -> ( ch /\ ps /\ th ) )

Proof

Step	Hyp	Ref	Expression
1		3com12d.1	|- ( ph -> ( ps /\ ch /\ th ) )
2		id	|- ( ( ch /\ ps /\ th ) -> ( ch /\ ps /\ th ) )
3	2	3com12	|- ( ( ps /\ ch /\ th ) -> ( ch /\ ps /\ th ) )
4	1 3	syl	|- ( ph -> ( ch /\ ps /\ th ) )