1) 16x = 2,5x +

\( 16x = 2,5x + \frac{1}{2} \)
\( 16x - 2,5x = \frac{1}{2} \)
\( 13,5x = \frac{1}{2} \)
\( x = \frac{1}{2} : 13,5 = \frac{1}{2} : \frac{27}{2} = \frac{1}{2} \cdot \frac{2}{27} = \frac{1}{27} \)

Ответ: \(x = \frac{1}{27}\)