[tex]c)\\\\(-6\frac{2}{3})*(- 7\frac{1}{7}) -\sqrt{\frac{169}{225}}=(- \frac{20}{3})*( -\frac{50}{7}) -\sqrt{(\frac{13}{15})^2}=\frac{\not{20}^2}{3}*\frac{7}{\not{50}^5}-\frac{13}{15}=\\\\=\frac{14}{15}-\frac{13}{15}=\frac{1}{15}\\\\d)\\\\-12 *3\frac{7}{15}+3\frac{1}{2}:5=- \not{12}^4* \frac{52}{\not{15}^5}+ \frac{7}{2}*\frac{1}{5}=-\frac{208}{5}+\frac{7}{10}=-\frac{416}{10}+\frac{7}{10}=-\frac{409}{10}=-40\frac{9}{10}=-40,9[/tex]
[tex]e)\\\\ 3\frac{3}{4}:\frac{3}{10}-(-1\frac{1}{6}):\frac{7}{5}= \frac{15}{\not{4}^2}*\frac{\not{10}^5}{3}+\frac{\not{7}^1 }{6}*\frac{5}{\not{7}^1}=\frac{75}{6}+\frac{5}{6}=\frac{80}{6}=\frac{40}{3}=13\frac{1}{3}[/tex]
