Вариант I. Задание 3. Решите уравнение: a) x + 3,12 = -5,43; б) 1 3/14 - y = 2 7/10.

a) x + 3,12 = -5,43 x = -5,43 - 3,12 x = -8,55 б) \(1\frac{3}{14} - y = 2\frac{7}{10}\) \(\frac{17}{14} - y = \frac{27}{10}\) y = \(\frac{17}{14} - \frac{27}{10}\) y = \(\frac{85}{70} - \frac{189}{70}\) y = -\frac{104}{70} = -\frac{52}{35} = -1\frac{17}{35}\)