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Step * of Lemma rmul-rdiv-cancel2

∀[a,b:ℝ].  ((b/a) * a) = b supposing a ≠ r0
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Latex:

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Latex:
\mforall{}[a,b:\mBbbR{}].    ((b/a)  *  a)  =  b  supposing  a  \mneq{}  r0


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Latex:
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