г) 7 9 x - 3 4 - 11 18 x - 1 4 ;

Решаем: \[\frac{7}{9}x - \frac{3}{4} - \frac{11}{18}x - \frac{1}{4} = (\frac{7}{9}x - \frac{11}{18}x) + (-\frac{3}{4} - \frac{1}{4}) = (\frac{14}{18}x - \frac{11}{18}x) + (-\frac{4}{4}) = \frac{3}{18}x - 1 = \frac{1}{6}x - 1\]