решите уравнение
а) 12/53 + 41/53 - k = 17/26
б) 28/54 + 12/54 - n = 8/27

12/53 + 41/53 - к = 17/2653/53 - к = 17/26к = 53/53 - 17/26к = 1 - 17/26к= 9/2628/54 + 12/54 - н = 8/2740/54 - н = 8/27н = 40/54 - 8/27н = 50/54 - 16/54н = 24/54н = 12/27