Theorem 2p4e6

Description: 2 + 4 = 6. (Contributed by SN, 24-Aug-2026)

	Ref	Expression
Assertion	2p4e6	|- ( 2 + 4 ) = 6

Proof

Step	Hyp	Ref	Expression
1		2cn	|- 2 e. CC
2	1 1 1	addassi	|- ( ( 2 + 2 ) + 2 ) = ( 2 + ( 2 + 2 ) )
3		2p2e4	|- ( 2 + 2 ) = 4
4	3	oveq1i	|- ( ( 2 + 2 ) + 2 ) = ( 4 + 2 )
5		4p2e6	|- ( 4 + 2 ) = 6
6	4 5	eqtri	|- ( ( 2 + 2 ) + 2 ) = 6
7	3	oveq2i	|- ( 2 + ( 2 + 2 ) ) = ( 2 + 4 )
8	2 6 7	3eqtr3ri	|- ( 2 + 4 ) = 6