5.201 Найдите корень уравнения: а) 19/30 - x = 14/30 - 3/30; б) 18/25 - 7/25 + y = 14/25

a) $$\frac{19}{30} - x = \frac{14}{30} - \frac{3}{30}$$

$$\frac{19}{30} - x = \frac{14-3}{30}$$

$$\frac{19}{30} - x = \frac{11}{30}$$

$$x = \frac{19}{30} - \frac{11}{30}$$

$$x = \frac{19-11}{30}$$

$$x = \frac{8}{30} = \frac{4}{15}$$

б) $$\frac{18}{25} - \frac{7}{25} + y = \frac{14}{25}$$

$$\frac{18-7}{25} + y = \frac{14}{25}$$

$$\frac{11}{25} + y = \frac{14}{25}$$

$$y = \frac{14}{25} - \frac{11}{25}$$

$$y = \frac{14-11}{25}$$

$$y = \frac{3}{25}$$

Ответ: a) x=4/15; б) y=3/25