Certificate for #5546 ⟨a, b, c | ab=c, acca=a⟩

Completion settings:

[1] c=ab

Axiom: ab=c.

Flip LHS and RHS.

Defines rule #2.

Referenced by [2].

[2] aababa=a

Axiom: acca=a.

Reduce LHS:

[1]a(c)ca
[1]⇒ aab(c)a
⇒ aababa

Defines rule #1.