Question

a+6b/6 ab*18a^2b^3/a^2+12ab+36b^2=

Answer 1

Условие...................=$frac{a+6b}{6ab}*frac{18a^2b^3}{(a+6b)^2}=frac{18a^2b^3}{6ab(a+6b)}=frac{3ab^2}{a+6b}$