237. Решите уравнение: в) $$z - \left(-\frac{4}{27}\right) = 6\frac{5}{9} - 1$$.

в) Решим уравнение: $$z - \left(-\frac{4}{27}\right) = 6\frac{5}{9} - 1$$.

$$z + \frac{4}{27} = 5\frac{5}{9}$$

$$z = 5\frac{5}{9} - \frac{4}{27}$$

$$z = \frac{5 \times 9 + 5}{9} - \frac{4}{27} = \frac{50}{9} - \frac{4}{27} = \frac{50 \times 3}{9 \times 3} - \frac{4}{27} = \frac{150}{27} - \frac{4}{27} = \frac{146}{27} = 5\frac{11}{27}$$

Ответ: $$5\frac{11}{27}$$