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Metamath Proof Explorer

Theorem 2re

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

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

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	$⊢ 2 \in ℝ$