Theorem 2re

Description: The number 2 is real. (Contributed by NM, 27-May-1999)

	Ref	Expression
Assertion	2re	$$⊢2\in ℝ$$

Proof

Step	Hyp	Ref	Expression
1		df-2	$$⊢2=1+1$$
2		1re	$$⊢1\in ℝ$$
3	2 2	readdcli	$$⊢1+1\in ℝ$$
4	1 3	eqeltri	$$⊢2\in ℝ$$