Вычислить (3 1/7-n)+1 4/7=3 5/7+2/7
(3 1/7 - n) + 1 4/7 = 3 5/7 + 2/7 (3 1/7 - n) + 1 4/7 = 3 7/7 3 1/7 - n = 3 7/7 - 1 4/7 3 1/7 - n = 2 3/7 n = 3 1/7 - 2 3/7 n = 2 8/7 - 2 3/7 n = 5/7
(3 1/7-n)+1 4/7=3 5/7+2/7 3 1/7-n + 1 4/7=3 7/7 4 5/7 - n = 4 n= 4 5/7 - 4 n= 5/7