\[\sqrt{2\frac{4}{49}} + \sqrt{2\frac{7}{9}} - 0,03\sqrt{40000} =\]
\[= \sqrt{\frac{100}{49}} + \sqrt{\frac{25}{9}} - 0,03 \cdot 200 =\]
\[= \frac{10^{\backslash 3}}{7} + \frac{5^{\backslash 7}}{3} - 6^{\backslash 21} =\]
\[= \frac{30 + 35 - 126}{21} = - \frac{61}{21} =\]
\[= - 2\frac{19}{21}\]