\(\frac{x}{3} + \frac{x - 1}{5} = 1\)
\(\frac{5x}{15} + \frac{3(x - 1)}{15} = \frac{15}{15}\)
\(5x + 3(x - 1) = 15\)
\(5x + 3x - 3 = 15\)
\(8x = 18\)
\(x = \frac{18}{8} = \frac{9}{4}\)
\(\frac{x - 3}{2} + \frac{x}{7} = 1\)
\(\frac{7(x - 3)}{14} + \frac{2x}{14} = \frac{14}{14}\)
\(7(x - 3) + 2x = 14\)
\(7x - 21 + 2x = 14\)
\(9x = 35\)
\(x = \frac{35}{9}\)
Ответ: x = 9/4; x = 35/9.