-1\(\frac{4}{5}\) - (-15) = -1\(\frac{4}{5}\) + 15 = 15 - 1 - \(\frac{4}{5}\) = 14 - \(\frac{4}{5}\) = 13\(\frac{5}{5}\) - \(\frac{4}{5}\) = \(\bf 13\frac{1}{5}\)
-1,95 - 8,68 = \(\bf -10,63\)
-7 - (-4) + 3 = -7 + 4 + 3 = -7 + 7 = \(\bf 0\)
-2,16 : \(\frac{3}{50}\) = -2,16 \(\cdot\) \(\frac{50}{3}\) = -\(\frac{216}{100}\) \(\cdot\) \(\frac{50}{3}\) = -\(\frac{216 \cdot 50}{100 \cdot 3}\) = -\(\frac{216 \cdot 1}{2 \cdot 3}\) = -\(\frac{216}{6}\) = \(\bf -36\)
1\(\frac{1}{8}\) - 3\(\frac{5}{6}\) = \(\frac{9}{8}\) - \(\frac{23}{6}\) = \(\frac{9 \cdot 3}{8 \cdot 3}\) - \(\frac{23 \cdot 4}{6 \cdot 4}\) = \(\frac{27}{24}\) - \(\frac{92}{24}\) = -\(\frac{65}{24}\) = \(\bf -2\frac{17}{24}\)
2 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11
A B
Ответ: 1) \(13\frac{1}{5}\); 2) -10,63; 3) 0; 4) -36; 5) -2\(\frac{17}{24}\)