5. Решить уравнение: $$\frac{7}{9}*y + \frac{11}{12} = \frac{13}{18}$$
$$\frac{7}{9}*y = \frac{13}{18} - \frac{11}{12} = \frac{26}{36} - \frac{33}{36} = -\frac{7}{36}$$
$$y = -\frac{7}{36} : \frac{7}{9} = -\frac{7}{36} * \frac{9}{7} = -\frac{1}{4}$$
Ответ: **y = -$$\frac{1}{4}$$**