[tex] \frac{1}{4} \ \textless \ x+ \frac{1}{18} \ \textless \ \frac{4}{9}
[/tex]
[tex] \frac{1}{4}- \frac{1}{18} \ \textless \ x\ \textless \ \frac{4}{9}- \frac{1}{18} [/tex][tex] \frac{9-2}{36}\ \textless \ x\ \textless \ \frac{4-2}{36} [/tex]
[tex] \frac{7}{36} \ \textless \ x\ \textless \ \frac{2}{36}
[/tex]
x=0