simplifying expressions - TeXForm without simplification

I'd like to be able to feed an expression into Mathematica, and have Mathematica convert that expression to TeXForm WITHOUT ANY SIMPLIFICATION WHATSOEVER.

As a trivial example, currently, if I enter

6/9 //TeXForm

MM returns

\frac{2}{3}

I'd like to be able to feed it 6/9 and have it return

\frac{6}{9}

Obviously there are solutions that would effectively involve writing my own parser, but I'm specifically looking for relatively short and clean solutions, if there are any.

Answer

HoldForm is your friend:

6/9 // HoldForm // TeXForm

\frac{6}{9}