1. Вычислить. 1) -1\(\frac{1}{4}\) - (-15) 4) -2,16 : \(\frac{3}{50}\) 2) -1,95 - 8,68 5) 1\(\frac{1}{5}\) - 3\(\frac{5}{6}\)

1. Вычисления:

1. \( -1\frac{1}{4} - (-15) = -1,25 + 15 = 13,75 \)
2. \( -1,95 - 8,68 = -10,63 \)
3. \( -7 - (-4) + 3 = -7 + 4 + 3 = 0 \)
4. \( -2,16 : \frac{3}{50} = -2,16 \times \frac{50}{3} = -0,72 \times 50 = -36 \)
5. \( 1\frac{1}{5} - 3\frac{5}{6} = \frac{6}{5} - \frac{23}{6} = \frac{36 - 115}{30} = -\frac{79}{30} = -2\frac{19}{30} \)

Ответ: 1) 13,75; 2) -10,63; 3) 0; 4) -36; 5) -2\(\frac{19}{30}\).