14. Решите уравнения: а) (x − 3 2/5) + 7 4/5 = 9 1/5; б) 5 3/8 + (x − 1 5/8) = 8 1/8.

а) \((x-3\frac{2}{5})+7\frac{4}{5}=9\frac{1}{5}\)

\(x-3\frac{2}{5}=9\frac{1}{5}-7\frac{4}{5}=1\frac{2}{5}\).

\(x=1\frac{2}{5}+3\frac{2}{5}=4\frac{4}{5}\).

Ответ: \(x=4\frac{4}{5}\).

б) \(5\frac{3}{8}+(x-1\frac{5}{8})=8\frac{1}{8}\)

\(x-1\frac{5}{8}=8\frac{1}{8}-5\frac{3}{8}=2\frac{6}{8}=2\frac{3}{4}\).

\(x=2\frac{3}{4}+1\frac{5}{8}=4\frac{3}{8}\).

Ответ: \(x=4\frac{3}{8}\).