Question 994982
Your are maybe wanting to try to reduce or factorize and simplify.  Treat it like a polynomial division problem but adjust so only non-rational terms, like whole number as the constant in the denominator, but to be like this:


{{{(6x^5+5x^4+x^3-3x^2+x)/(x+1/3)}}}


{{{3(6x^5+5x^4+x^3-3x^2+x)/(3(x+1/3))}}}


{{{(18x^5+15x^4+3x^3-9x^2+3x)/(3x+1)}}}


{{{x(18x^4+15x^3+3x^2-9x+3)/(3x+1)}}}


Now, the x is used as a separate factor to put back after you do the polynomial division for  {{{(18x^4+15x^3+3x^2-9x+3)/(3x+1)}}}.