б) \(\frac{18}{25}\) - \(\frac{7}{25}\) + y = \(\frac{14}{25}\)\(\frac{11}{25}\) + y = \(\frac{14}{25}\)y = \(\frac{14}{25}\) - \(\frac{11}{25}\)y = \(\frac{3}{25}\)
Ответ: \(\frac{3}{25}\)