Theorem addridd

Description: 0 is an additive identity. (Contributed by Mario Carneiro, 27-May-2016)

	Ref	Expression
Hypothesis	muld.1	$$⊢\phi \to A\in ℂ$$
Assertion	addridd	$$⊢\phi \to A+0=A$$

Proof

Step	Hyp	Ref	Expression
1		muld.1	$$⊢\phi \to A\in ℂ$$
2		addrid	$$⊢A\in ℂ\to A+0=A$$
3	1 2	syl	$$⊢\phi \to A+0=A$$