Question 111158
{{{5r^3st^2/-10r^6s^3t}}}……….reduce the following: 

{{{r^3/r^6 = r^(3-6) =r^(-3) = 1/r^3}}}, 

{{{s/s^3 = s^(1-3) =s^(-2) = 1/s^2}}}, 

and {{{t^2/t^1 = t^(2-1) =t^(1) = t }}}   

then you will have:

{{{5t/-10r^3s^2}}}……….now divide both nominator and denominator by {{{5}}}


{{{(5/5)t/(-10/5)r^3s^2}}}……….


your answer is:

{{{t/-2r^3s^2}}}……….