Question

14/15 - 9/15 = ?

7/24 + 5/24 = ?

9/20 + 14/20 - 8/20 = ?

Answer 1

Ответ:

$1)\ \dfrac{1}{3};\\\\2)\ \dfrac{1}{2};\\\\3)\ \dfrac{3}{4}.$

Пошаговое объяснение:

$1)\ \dfrac{14}{15} - \dfrac{9}{15} = \dfrac{14-9}{15} = \dfrac{5}{15} = \dfrac{1}{3};\\\\2)\ \dfrac{7}{24} + \dfrac{5}{24} = \dfrac{7+5}{24} = \dfrac{12}{24} = \dfrac{1}{2};\\\\3)\ \dfrac{9}{20} + \dfrac{14}{20} - \dfrac{8}{20} = \dfrac{9+14-8}{20} = \dfrac{15}{20} = \dfrac{3}{4}.$