5. Решить уравнение: 1) x+\(\frac{23}{54}\) = \(\frac{47}{54}\); 2) y-\(\frac{18}{35}\) = \(\frac{13}{35}\); 3) \(\frac{28}{47}\) - x=\(\frac{20}{47}\)

1) Решим уравнение: x + \(\frac{23}{54}\) = \(\frac{47}{54}\)

x = \(\frac{47}{54}\) - \(\frac{23}{54}\)

x = \(\frac{47-23}{54}\)

x = \(\frac{24}{54}\)

x = \(\frac{4}{9}\)

2) Решим уравнение: y - \(\frac{18}{35}\) = \(\frac{13}{35}\)

y = \(\frac{13}{35}\) + \(\frac{18}{35}\)

y = \(\frac{13+18}{35}\)

y = \(\frac{31}{35}\)

3) Решим уравнение: \(\frac{28}{47}\) - x = \(\frac{20}{47}\)

x = \(\frac{28}{47}\) - \(\frac{20}{47}\)

x = \(\frac{28-20}{47}\)

x = \(\frac{8}{47}\)

Ответ: 1) \(\frac{4}{9}\); 2) \(\frac{31}{35}\); 3) \(\frac{8}{47}\).