найдите корень уравнения используя алгоритм а) 3/4-(7/8-а)=1/8 б) (5/6-n) -1/3=5/12 в) 3/4-(x+1/12)=1/5 г) 2/3 -(x-1/21)=2/7

а) 3/4 - (7/8 - a) = 1/86/8 - 1/8 = 7/8 - a5/8 = 7/8 - aa = 7/8 - 5/8 = 2/8 = 1/4б) (5/6 - n) - 1/3 = 5/1210/12 - n = 4/12 + 5/1210/12 - n = 9/1210/12 - 9/12 = n = 1/12в) 3/4 - (x + 1/12) = 1/545/60 - 12/60 = x + 5/60x + 5/60 = 33/60x = 33/60 - 5/60 = 28/60 = 7/15г) 2/3 - (x - 1/21) = 2/714/21 - 6/21 = x - 1/21x - 1/21 = 8/21x = 9/21 = 3/7