[tex]\text{Notez lungimea totala a treusului cu x.}\\
\text{Mai intai aflam cat a parcurs in cele doua zile:}\\
\dfrac{3}{8}\cdot x+\dfrac{3}{8}\cdot x+\dfrac{1}{8}=\dfrac{3}{4}x+\dfrac{1}{8}\\
\text{I-a mai ramas de parcurs:}\\
x-\dfrac{3}{4}\cdot x-\dfrac{1}{8}=\dfrac{1}{4}x-\dfrac{1}{8}[/tex]