\[\boxed{\text{937\ (937).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[Пусть\ \text{x\ }штук - монеты\ по\ \]
\[2\ руб,\ \text{y\ }штук - монеты\ по\ \]
\[5\ руб.\]
\[Тогда\ \ 2x + 5y = 29;\ \ \]
\[подбираем\ решения.\]
\[y = 1:\ \ \]
\[2x + 5 = 29\ \ \]
\[2x = 24\ \]
\[x = 12 \Longrightarrow (12;1).\]
\[y = 3:\ \]
\[2x + 15 = 29\ \ \]
\[2x = 14\ \ \]
\[x = 7 \Longrightarrow \ \ (7;3).\]
\[y = 5:\ \ \]
\[2x + 25 = 29\ \]
\[2x = 4\ \ \]
\[x = 2 \Longrightarrow \ \ (2;5)\]
\[Ответ:3\ способа.\]