Tìm x, biết:

a) \(\frac{5}{4} - x = \frac{3}{2}\)

\(x = \frac{5}{4} - \frac{3}{2}\)

\(x = \frac{{ - 1}}{4}\)

Vậy \(x = \frac{{ - 1}}{4}\).

b) \(\frac{4}{3} + \frac{1}{2}x = \frac{7}{6}\)

\(\frac{1}{2}x = \frac{7}{6} - \frac{4}{3}\)

\(\frac{1}{2}x = \frac{{ - 1}}{6}\)

\(x = \frac{{ - 1}}{6}:\frac{1}{2}\)

\(x = \frac{{ - 1}}{3}\)

Vậy \(x = \frac{{ - 1}}{3}\).