Metamath Proof Explorer


Theorem 3adantll2

Description: Deduction adding a conjunct to antecedent. (Contributed by Glauco Siliprandi, 11-Dec-2019)

Ref Expression
Hypothesis 3adantll2.1 ⊢ φ ∧ ψ ∧ χ ∧ θ → τ
Assertion 3adantll2 ⊢ φ ∧ η ∧ ψ ∧ χ ∧ θ → τ

Proof

Step Hyp Ref Expression
1 3adantll2.1 ⊢ φ ∧ ψ ∧ χ ∧ θ → τ
2 simpll1 ⊢ φ ∧ η ∧ ψ ∧ χ ∧ θ → φ
3 simpll3 ⊢ φ ∧ η ∧ ψ ∧ χ ∧ θ → ψ
4 2 3 jca ⊢ φ ∧ η ∧ ψ ∧ χ ∧ θ → φ ∧ ψ
5 simplr ⊢ φ ∧ η ∧ ψ ∧ χ ∧ θ → χ
6 simpr ⊢ φ ∧ η ∧ ψ ∧ χ ∧ θ → θ
7 4 5 6 1 syl21anc ⊢ φ ∧ η ∧ ψ ∧ χ ∧ θ → τ