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Step * of Lemma qmul-qdiv-cancel4

∀[a,b,c:ℚ].  ((b/a) * a * c) = (b * c) ∈ ℚ supposing ¬(a = 0 ∈ ℚ)
BY
{ xxx(Auto THEN ((RWO "qmul_assoc<" 0 THENM RWO "qmul-qdiv-cancel2" 0) THENA Auto))xxx }

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Latex:

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Latex:
\mforall{}[a,b,c:\mBbbQ{}].    ((b/a)  *  a  *  c)  =  (b  *  c)  supposing  \mneg{}(a  =  0)


By

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Latex:
xxx(Auto  THEN  ((RWO  "qmul\_assoc<"  0  THENM  RWO  "qmul-qdiv-cancel2"  0)  THENA  Auto))xxx

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