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Theorem adas 172
Description: Plus is associative.
Hypothesis
Ref Expression
adas.1 (𝜑 ⅋ ((𝜓𝜒) ⊕ 𝜃))
Assertion
Ref Expression
adas (𝜑 ⅋ (𝜓 ⊕ (𝜒𝜃)))

Proof of Theorem adas
StepHypRef Expression
Colors of variables: wff var nilad
Syntax hints:  wmd 2  wad 131
 WARNING: This theorem has an incomplete proof.
This theorem is referenced by: (None)
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