Распредели элементы

Приведи к общему знаменателю дроби:

а) \(\dfrac 2 3\) и \(\dfrac 4 5; \,\,\,\,\,\,\,\,\,\,\,\,\) б) \(\dfrac 3 {14}\) и \(\dfrac 5 7; \,\,\,\,\,\,\,\,\,\,\,\,\)

в) \(\dfrac 2 3\) и \(\dfrac 5 7; \,\,\,\,\,\,\,\,\,\,\,\,\) г) \(\dfrac 3 {10}\) и \(\dfrac 5 {8}\) .

Ответ:

• \(\dfrac{15}{15}\) и \(\dfrac{10}{15}\)
• \(\dfrac{4}{15}\) и \(\dfrac{4}{15}\)
• \(\dfrac{10}{15}\) и \(\dfrac{12}{15}\)
• \(\dfrac{3}{15}\) и \(\dfrac{10}{15}\)
• \(\dfrac{3}{14}\) и \(\dfrac{5}{14}\)
• \(\dfrac{3}{14}\) и \(\dfrac{10}{14}\)
• \(\dfrac{2}{7}\) и \(\dfrac{5}{7}\)
• \(\dfrac{2}{6}\) и \(\dfrac{5}{14}\)
• \(\dfrac{14}{21}\) и \(\dfrac{15}{21}\)
• \(\dfrac{3}{10}\) и \(\dfrac{5}{10}\)
• \(\dfrac{3}{80}\) и \(\dfrac{5}{80}\)
• \(\dfrac{12}{40}\) и \(\dfrac{25}{40}\)

а) [ ];

б) [ ];

в) [ ];

г) [ ].