Question 330273
{{{((-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)}}}