х = 9 13/15
Пошаговое объяснение:
(5 2/15 + x) - 3 7/15 = 11 8/15
х = 11 8/15 + 3 7/15 - 5 2/15
х = 14 15/15 - 5 2/15
(5 2/15 + 9 13/15) - 3 7/15 = 11 8/15
14 15/15 - 3 7/15 = 11 8/15
11 8/15 = 11 8/15 - верно
х = 9 13/15
Пошаговое объяснение:
(5 2/15 + x) - 3 7/15 = 11 8/15
х = 11 8/15 + 3 7/15 - 5 2/15
х = 14 15/15 - 5 2/15
х = 9 13/15
(5 2/15 + 9 13/15) - 3 7/15 = 11 8/15
14 15/15 - 3 7/15 = 11 8/15
11 8/15 = 11 8/15 - верно