Question 322807
{{{(-2a^2)/(3a^2)*(20a)/(15a^3)=((-2*20)/(3*15))*a^(2-2+1-3)}}}
{{{(-2a^2)/(3a^2)*(20a)/(15a^3)=(-8/9)*a^(-2)}}}
{{{(-2a^2)/(3a^2)*(20a)/(15a^3)=(-8)/(9a^2)}}}