Question

$frac{1}{2} sqrt{} {1200} - frac{2}{5 } sqrt{2700} - 0.4 sqrt{243}$

Answer 1

$********\mathtt{dfrac{20sqrt3}{2}-dfrac{2.30sqrt{3}}{5}-dfrac{4.9sqrt{3}}{10}}\\\mathtt{{boxed{sqrt{3}}}.{dfrac{20}{2}-dfrac{60}{5}-dfrac{36}{10}}}\\\mathtt{{boxed{sqrt{3}}}{10-12-3,6}}\mathtt{{boxed{sqrt3}}{-5,6}}\mathtt{textsf{-5,6}sqrt3}\*********\mathtt{textbf{Bac{s}ari lar}}$