1) 1 + 2\7 + X = 2 X = 2 - 1 - 2\7 = 1 - 2\7 = 5\7 ................................................ 2) Y + 3 + 2\5 = 6 + 3\5 Y = 6 + 3\5 - 3 - 2\5 = 3 + 1\5 = 3.2 ............................................................. 3) 3 + 3\10 - X = 2 + 7\10 X = 3 + 3\10 - 2 - 7\10 = 1 + 0.3 - 0.7 = 1 - 0.4 = 0.6 ......................................................................... 4) Y - 7 + 2\10 = 1 + 7\10 Y = 1 + 7\10 + 7 - 2\10 = 8 + 0.7 - 0.2 = 8 + 0.5 = 8.5 .................................................................................
Я не поняла: а что не понравилось в решении ????