Theorem oveq1i

Description: Equality inference for operation value. (Contributed by NM, 28-Feb-1995)

	Ref	Expression
Hypothesis	oveq1i.1	$$⊢A=B$$
Assertion	oveq1i	$$⊢AFC=BFC$$

Proof

Step	Hyp	Ref	Expression
1		oveq1i.1	$$⊢A=B$$
2		oveq1	$$⊢A=B\to AFC=BFC$$
3	1 2	ax-mp	$$⊢AFC=BFC$$