Question 29902
{{{ (5r^3st^2)/(-10r^6s^3t) }}} break it into separate fractions.
{{{ (5/-10)*(r^3/r^6)*(s/s^3)*(t^2/t) }}} reduce each fraction
{{{ (1/-2)*(1/r^3)*(1/s^2)*(t/1) }}} put it back together
{{{ (1*1*1*t)/(-2*r^3*s^2*1) }}} multipy out the num and denom
{{{ t/(-2r^3s^2) }}}