Срочно помогите решить уравнения!!!!¡!!!!!!!!!

Решите задачу:

$\displaystyle \tt 1). \ \ x-\frac{5}{12}=\frac{2}{12}\\\\. \ \ \ \ \ x=\frac{2}{12}+\frac{5}{12}\\\\. \ \ \ \ \ x=\frac{7}{12}\\\\\\2). \ \ \frac{15}{16}-y=\frac{3}{16}\\\\. \ \ \ \ \ \ y=\frac{15}{16}-\frac{3}{16}\\\\. \ \ \ \ \ \ y=\frac{12}{16}\\\\. \ \ \ \ \ \ y=\frac{3}{4}\\\\\\3). \ \ z+\frac{7}{19}=\frac{11}{19}\\\\. \ \ \ \ \ z=\frac{11}{19}-\frac{7}{19}\\\\. \ \ \ \ \ z=\frac{4}{19}$