Theorem 8p6e14

Description: 8 + 6 = 14. (Contributed by Mario Carneiro, 19-Apr-2015)

	Ref	Expression
Assertion	8p6e14	⊢ ( 8 + 6 ) = ; 1 4

Proof

Step	Hyp	Ref	Expression
1		8nn0	⊢ 8 ∈ ℕ0
2		5nn0	⊢ 5 ∈ ℕ0
3		3nn0	⊢ 3 ∈ ℕ0
4		df-6	⊢ 6 = ( 5 + 1 )
5		df-4	⊢ 4 = ( 3 + 1 )
6		8p5e13	⊢ ( 8 + 5 ) = ; 1 3
7	1 2 3 4 5 6	6p5lem	⊢ ( 8 + 6 ) = ; 1 4