Б) 8/15-7/15+у=14/15 хелп мииии
8/15 - 7/15 + у = 14/15 1/15 +у= 14/15 у= 14/15 - 1/15 у= 13/15
1/15 + y = 14/15 y = (14-1)/15 y = 13/15