1. Решим уравнение:
\( 7x - 3,7 = 5x \)
\( 7x - 5x = 3,7 \)
\( 2x = 3,7 \)
\( x = \frac{3,7}{2} \)
\( x = 1,85 \)
2. Решим уравнение:
\( 2 \frac{5}{6} n - 1 = \frac{1}{3} n \)
\( 2 \frac{5}{6} = \frac{2 \cdot 6 + 5}{6} = \frac{12 + 5}{6} = \frac{17}{6} \)
\( \frac{17}{6} n - 1 = \frac{1}{3} n \)
\( \frac{17}{6} n - \frac{1}{3} n = 1 \)
\( \frac{17}{6} n - \frac{1 \cdot 2}{3 \cdot 2} n = 1 \)
\( \frac{17}{6} n - \frac{2}{6} n = 1 \)
\( \frac{17 - 2}{6} n = 1 \)
\( \frac{15}{6} n = 1 \)
\( \frac{5}{2} n = 1 \)
\( n = 1 : \frac{5}{2} \)
\( n = 1 \cdot \frac{2}{5} \)
\( n = \frac{2}{5} \)
\( n = 0,4 \)
Ответ: x = 1,85; n = 0,4.