Решите уравнение: a) 8\(\frac{6}{19}\) - x = 5\(\frac{3}{19}\); б) x + 3\(\frac{6}{7}\) = 8\(\frac{3}{7}\).

а) 8\(\frac{6}{19}\) - x = 5\(\frac{3}{19}\)

x = 8\(\frac{6}{19}\) - 5\(\frac{3}{19}\)

x = (8 - 5) + (\(\frac{6}{19}\) - \(\frac{3}{19}\))

x = 3 + \(\frac{3}{19}\)

x = 3\(\frac{3}{19}\)

б) x + 3\(\frac{6}{7}\) = 8\(\frac{3}{7}\)

x = 8\(\frac{3}{7}\) - 3\(\frac{6}{7}\)

x = 7\(\frac{10}{7}\) - 3\(\frac{6}{7}\)

x = (7 - 3) + (\(\frac{10}{7}\) - \(\frac{6}{7}\))

x = 4 + \(\frac{4}{7}\)

x = 4\(\frac{4}{7}\)

Ответ: а) x = 3\(\frac{3}{19}\); б) x = 4\(\frac{4}{7}\)