Вычислите:
а) $\frac{7}{12} - \frac{5}{12}$;
б) $\frac{8}{15} - \frac{4}{15}$;
в) $\frac{17}{36} - \frac{11}{36}$;
г) $\frac{17}{45} - \frac{2}{45}$;
д) $\frac{5}{48} - \frac{1}{12}$;
е) $\frac{5}{12} - \frac{5}{18}$;
ж) $\frac{1}{14} - \frac{1}{21}$;
з) $\frac{3}{26} - \frac{4}{39}$.
$\frac{7}{12} - \frac{5}{12} = \frac{2}{12} = \frac{1}{6}$
$\frac{8}{15} - \frac{4}{15} = \frac{4}{15}$
$\frac{17}{36} - \frac{11}{36} = \frac{6}{36} = \frac{1}{6}$
$\frac{17}{45} - \frac{2}{45} = \frac{15}{45} = \frac{1}{3}$
$\frac{5}{48} - \frac{1}{12} = \frac{5 - 4}{48} = \frac{1}{48}$
$\frac{5}{12} - \frac{5}{18} = \frac{15 - 10}{36} = \frac{5}{36}$
$\frac{1}{14} - \frac{1}{21} = \frac{3 - 2}{42} = \frac{1}{42}$
$\frac{3}{26} - \frac{4}{39} = \frac{9 - 8}{78} = \frac{1}{78}$
Пожауйста, оцените решение