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Metamath Proof Explorer

Theorem 1m0e1

Description: 1 - 0 = 1. (Contributed by David A. Wheeler, 8-Dec-2018)

Ref Expression
Assertion 1m0e1 ( 1 − 0 ) = 1

Proof

Step Hyp Ref Expression
1 ax-1cn ⊢ 1 ∈ ℂ
2 1 subid1i ⊢ ( 1 − 0 ) = 1