Theorem simp3l2

Description: Simplification of conjunction. (Contributed by NM, 9-Mar-2012)

	Ref	Expression
Assertion	simp3l2	⊢ ( ( 𝜏 ∧ 𝜂 ∧ ( ( 𝜑 ∧ 𝜓 ∧ 𝜒 ) ∧ 𝜃 ) ) → 𝜓 )

Proof

Step	Hyp	Ref	Expression
1		simpl2	⊢ ( ( ( 𝜑 ∧ 𝜓 ∧ 𝜒 ) ∧ 𝜃 ) → 𝜓 )
2	1	3ad2ant3	⊢ ( ( 𝜏 ∧ 𝜂 ∧ ( ( 𝜑 ∧ 𝜓 ∧ 𝜒 ) ∧ 𝜃 ) ) → 𝜓 )