Ответ:

Решение:

  1. \( -2,7 \cdot 6 = -16,2 \)
  2. \( -2,3 - 7,7 = -10 \)
  3. \( -7 - (-5) + 4 = -7 + 5 + 4 = 2 \)
  4. \( -3 : 2\frac{3}{7} = -3 : \frac{17}{7} = -3 \cdot \frac{7}{17} = -\frac{21}{17} = -1\frac{4}{17} \)
  5. \( 1\frac{1}{8} + \frac{1}{3} = \frac{9}{8} + \frac{1}{3} = \frac{27 + 8}{24} = \frac{35}{24} = 1\frac{11}{24} \)

Ответ: 1) -16,2; 2) -10; 3) 2; 4) -1\(\frac{4}{17}\); 5) 1\(\frac{11}{24}\).