Ответ:\(\frac{a^2}{a(a+b)}=\frac{a}{a+b}\).\(\frac{pq^3}{pq(p-q)}=\frac{q^2}{p-q}\).\(\frac{5(k+3f)}{k+3f}=5\).\(\frac{3(a-2b)}{-6(a-2b)}=-\frac12\).\(\frac{2(m-2n)}{-8(m-2n)}=-\frac14\).