Question 878665
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{{{(18*r^4*s^5*t^6)/(-3r^2*s*t^3)}}}



{{{(-6*r^4*s^5*t^6)/(r^2*s*t^3)}}} Divide {{{18/(-3)}}} to get {{{-6}}}



{{{-6*r^(4-2)*s^(5-1)*t^(6-3)}}} Subtract the exponents to divide the variable terms (eg: {{{(r^4)/(r^2) = r^(4-2)}}})



{{{-6*r^2*s^4*t^3}}} Subtract



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So the answer is {{{-6*r^2*s^4*t^3}}} which is <font color="red">choice D</font>