Tìm X a) 3/2 – X + 2/3 = 1/6

a) \(\frac{3}{2}\) – X + \(\frac{2}{3}\) = \(\frac{1}{6}\)

 \(\frac{3}{2}\) – X = \(\frac{1}{6} - \frac{2}{3}\)

 \(\frac{3}{2}\) – X = \(\frac{1}{6} - \frac{4}{6}\)

 \(\frac{3}{2}\) – X = \( - \frac{1}{2}\)

        X = \(\frac{3}{2} - \left( { - \frac{1}{2}} \right)\)

       X = \(\frac{3}{2} + \frac{1}{2}\)

       X = 2

b) \(\frac{1}{X}\) + \(\frac{2}{3}\) = \(\frac{{11}}{{12}}\)

\(\frac{1}{X}\)          = \(\frac{{11}}{{12}} - \frac{2}{3}\)

\(\frac{1}{X}\)      = \(\frac{{11}}{{12}} - \frac{8}{{12}}\)

\(\frac{1}{X}\)      = \(\frac{1}{4}\)

 X       = 4