Find the sum 6/a^2b^2+a^2/b

(6 / ((a^2) (b^2))) + (a^2) / (b)

(6 / ((a^2) (b^2))) + ((a^2) (b) (a^2)) / ((b) (b) (a^2))

(6 / ((a^2) (b^2))) + ((b) (a^4)) / ((b^2) (a^2))

(6 + (a^4) (b)) / ((a^2) (b^2))