Theorem ancomsd

Deduction commuting conjunction in antecedent. (Contributed by NM, 12-Dec-2004.)

Hypothesis
ancomsd.1
\( \vdash \varphi \rightarrow \psi \wedge \chi \rightarrow \theta \)
Conclusion
\( \vdash \varphi \rightarrow \chi \wedge \psi \rightarrow \theta \)
Proof
ancomsd.1
expcomd _
impd _