Решите уравнение а) 3\5 + x =4\5 б) y - 2\7 = 6\7 в) 11\25 - k = 7\25 г) d + 2\9 = 1\9 +7\9

a) 3/5 + x = 4/5; x = 4/5 - 3/5; x = 1b) y - 2/7 = 6/7; y = 6/7 + 2/7; y = 8/7c) 11/25 - k = 7/25; -k = 7/25 - 11/25; -k = -4/25; k = 4/25d) d + 2/9 = 1/9 + 7/9; d = 1/9 + 7/9 - 2/9; d = 6/9 = 2/3