\[\frac{x - 1}{5} = \frac{5 - x}{2} + \frac{3x}{4}\ \ \ \ \ | \cdot 20\]
\[4 \cdot (x - 1) = 10 \cdot (5 - x) + 5 \cdot 3x\]
\[4x - 4 = 50 - 10x + 15x\]
\[4x - 5x = 50 + 4\]
\[- x = 54\]
\[x = - 54.\]