435. Найдите корни уравнений: 1) 1/4 + y = 3/7; 2) y − 5/12 = 3/10; 3) y + 4/11 = 3/5; 4) 4/15 + y = 11/25.

1. \(\frac{1}{4}+y=\frac{3}{7}\).

   \(y=\frac{3}{7}-\frac{1}{4}=\frac{12}{28}-\frac{7}{28}=\frac{5}{28}\).

2. \(y-\frac{5}{12}=\frac{3}{10}\).

   \(y=\frac{3}{10}+\frac{5}{12}=\frac{18}{60}+\frac{25}{60}=\frac{43}{60}\).

3. \(y+\frac{4}{11}=\frac{3}{5}\).

   \(y=\frac{3}{5}-\frac{4}{11}=\frac{33}{55}-\frac{20}{55}=\frac{13}{55}\).

4. \(\frac{4}{15}+y=\frac{11}{25}\).

   \(y=\frac{11}{25}-\frac{4}{15}=\frac{33}{75}-\frac{20}{75}=\frac{13}{75}\).

Ответ: 1) \(y=\frac{5}{28}\); 2) \(y=\frac{43}{60}\); 3) \(y=\frac{13}{55}\); 4) \(y=\frac{13}{75}\).