Question 88721
{{{(20u^5-15t^4u^3)/20u^6w }}}


{{{20u^5/(20u^6w)-15t^4u^3/(20u^6w)}}} Break up the fraction


{{{20u^(5-6)/(20w)-15t^4u^(3-6)/(20w)}}} Subtract the exponents 


{{{20u^(-1)/(20w)-15t^4u^(-3)/(20w)}}} 


{{{u^(-1)/(w)-3t^4u^(-3)/(4w)}}} Reduce


{{{1/(uw)-3t^4/(4u^3w)}}} Flip any negative exponent