Find the LCM of 2\(^3\) x 3 x 5\(^2\), 2 x 3\(^2\) x 5 and 2\(^3\) x 3\(^3\) x 5
Simplify 3\(\sqrt{45} - 12\sqrt{5} + 16\sqrt{20}\), leaving your answer in surd form.