Theorem 1le2

Description: 1 is less than or equal to 2. (Contributed by David A. Wheeler, 8-Dec-2018)

	Ref	Expression
Assertion	1le2	⊢ 1 ≤ 2

Proof

Step	Hyp	Ref	Expression
1		1re	⊢ 1 ∈ ℝ
2		2re	⊢ 2 ∈ ℝ
3		1lt2	⊢ 1 < 2
4	1 2 3	ltleii	⊢ 1 ≤ 2