$-1\frac{3}{16} * (-8) + 2\frac{1}{42} * (-2\frac{6}{17}) - (-1\frac{11}{28}) * (-1\frac{3}{13}) = 3\frac{1}{42}$
а) $-1\frac{3}{16} * (-8) = \frac{19}{16} * 8 = \frac{19}{2} * 1 = 9\frac{1}{2}$
б) $2\frac{1}{42} * (-2\frac{6}{17}) = \frac{85}{42} * (-\frac{40}{17}) = \frac{5}{21} * (-\frac{20}{1}) = -\frac{100}{21} = -4\frac{16}{21}$
в) $(-1\frac{11}{28}) * (-1\frac{3}{13}) = \frac{39}{28} * \frac{16}{13} = \frac{3}{7} * \frac{4}{1} = \frac{12}{7} = 1\frac{5}{7}$
г) $9\frac{1}{2} + (-4\frac{16}{21}) = 9\frac{21}{42} - 4\frac{32}{42} = 8\frac{63}{42} - 4\frac{32}{42} = 4\frac{31}{42}$
д) $4\frac{31}{42} - 1\frac{5}{7} = 4\frac{31}{42} - 1\frac{30}{42} = 3\frac{1}{42}$