Ответ: смотри решение ниже
а) -2 и 3;
Сумма чисел -2 и 3 равна 1.
б) -3 \(\frac{1}{2}\) и -1 \(\frac{1}{2}\).
Сумма чисел -3 \(\frac{1}{2}\) и -1 \(\frac{1}{2}\) равна -5.
a) -32 + (-4) = -36
б) -1 \(\frac{3}{5}\) + (-3 \(\frac{1}{5}\)) = -1 \(\frac{3}{5}\) - 3 \(\frac{1}{5}\) = -4 \(\frac{4}{5}\)
в) -\(\frac{3}{7}\) + \(\frac{2}{3}\) = -\(\frac{9}{21}\) + \(\frac{14}{21}\) = \(\frac{5}{21}\)
-3x = -7 - 5
-3x = -12
x = -12 / -3
x = 4
Целые числа, расположенные между -13 и 11: -12, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.
Количество целых чисел: 23.
(0.8 + (- \(\frac{1}{6}\))) + (-2 \(\frac{1}{30}\)) = (\(\frac{4}{5}\) - \(\frac{1}{6}\)) - 2 \(\frac{1}{30}\) = (\(\frac{24}{30}\) - \(\frac{5}{30}\)) - 2 \(\frac{1}{30}\) = \(\frac{19}{30}\) - \(\frac{61}{30}\) = -\(\frac{42}{30}\) = -\(\frac{7}{5}\) = -1.4
( \(\frac{2}{9}\) + (- \(\frac{5}{9}\))) + \(\frac{2}{3}\) = (\(\frac{2}{9}\) - \(\frac{5}{9}\)) + \(\frac{2}{3}\) = -\(\frac{3}{9}\) + \(\frac{2}{3}\) = -\(\frac{1}{3}\) + \(\frac{2}{3}\) = \(\frac{1}{3}\)
Ответ: 1) 1; -5 2) -36; -4 \(\frac{4}{5}\); \(\frac{5}{21}\) 3) 4 4) 23 5) -1.4; \(\frac{1}{3}\)