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Theorem eqtr 250
Description: Equality is transitive.
Assertion
Ref Expression
eqtr ((X = YY = Z) ⊸ X = Z)

Proof of Theorem eqtr
StepHypRef Expression
Colors of variables: wff var nilad
Syntax hints:  wli 61  wmc 105   = weq 246
 WARNING: This theorem has an incomplete proof.
This theorem is referenced by: (None)
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