How do you simplify ##(16 times r ^3 times t ^2) /(- 4 times r times t)##?

##-4r^2t##

Using the ##color(blue)"law of exponents"##

##color(orange)"Reminder " color(red)(bar(ul(|color(white)(2/2)color(black)(a^m/a^n=a^(m-n))color(white)(2/2)|)))##

##rArr(16r^3t^2)/(-4rt)##

##=16/(-4)xxr^3/r^1xxt^2/t^1##

##=-4xxr^(3-1)xxt^(2-1)=-4r^2t##