Question 593569
<pre>
{{{(-12x^3y^4 + 18x^2y^3 + 6x^2y^2)/(6x^2y^2)}}}

There are three terms on top, so make three fractions
with the signs of the terms before each one, and with
that denominator 6x²y² under each, like this:

—{{{(12x^3y^4)/(6x^2y^2)}}} + {{{(18x^2y^3)/(6x^2y^2)}}} + {{{(6x^2y^2)/(6x^2y^2)}}}

Then do each term as though it were a separate problem by dividing 
coefficients and subtracting exponents, and you end up with:

—2xy² + 3y + 1

Edwin</pre>