Выполните действия.
\(\frac{7}{15}+\frac{5}{12}\)
\(\frac{21}{50}-\frac{7}{30}\)
\(\frac{11}{30}-\frac{7}{80}\)
\(\frac{5}{42}+\frac{5}{36}\)
\(\frac{14}{75}\)
\(\frac{65}{252}\)
\(\frac{67}{240}\)
\(\frac{53}{60}\)