Theorem 2p6e8

Description: 2 + 6 = 8. (Contributed by SN, 24-Aug-2026)

	Ref	Expression
Assertion	2p6e8	⊢ ( 2 + 6 ) = 8

Proof

Step	Hyp	Ref	Expression
1		2cn	⊢ 2 ∈ ℂ
2		4cn	⊢ 4 ∈ ℂ
3	1 1 2	addassi	⊢ ( ( 2 + 2 ) + 4 ) = ( 2 + ( 2 + 4 ) )
4		2p2e4	⊢ ( 2 + 2 ) = 4
5	4	oveq1i	⊢ ( ( 2 + 2 ) + 4 ) = ( 4 + 4 )
6		4p4e8	⊢ ( 4 + 4 ) = 8
7	5 6	eqtri	⊢ ( ( 2 + 2 ) + 4 ) = 8
8		2p4e6	⊢ ( 2 + 4 ) = 6
9	8	oveq2i	⊢ ( 2 + ( 2 + 4 ) ) = ( 2 + 6 )
10	3 7 9	3eqtr3ri	⊢ ( 2 + 6 ) = 8