Metamath Proof Explorer


Theorem ancomd

Description: Commutation of conjuncts in consequent. (Contributed by Jeff Hankins, 14-Aug-2009)

Ref Expression
Hypothesis ancomd.1 ( 𝜑 → ( 𝜓𝜒 ) )
Assertion ancomd ( 𝜑 → ( 𝜒𝜓 ) )

Proof

Step Hyp Ref Expression
1 ancomd.1 ( 𝜑 → ( 𝜓𝜒 ) )
2 ancom ( ( 𝜓𝜒 ) ↔ ( 𝜒𝜓 ) )
3 1 2 sylib ( 𝜑 → ( 𝜒𝜓 ) )