Пошаговое объяснение:
1\8 + (5\9 - 1\2) = 5\9 - 1\2 = 10\18 + 9\18 = 19\18 + 1\8 = 76\72 + 9\72 = 85\72 = 1 13\72
3\25 + 0,5 - 4\5 = 0,12 + 0,5 - 0,60 = 0,62 - 0,60 = 0,02
(3\4 + 1\8) - 5\8 = 3\4 + 1\8 = 6\8 + 1\8 = 14\8 - 5\8 = 9\8 = 1 1\8
7 - 1 5\8 + 1 2\9 = 6 8\8 - 1 5\8 = 5 3\8 + 1 2\9 = 5 27\72 + 1 16\72 = 6 43\72
9 - 15\16 + 1\8 = 8 16\16 - 15\16 = 8 1\16 + 1\8 = 8 1\16 + 2\16 = 8 3\16
17 - 5 2\5 + 2 6\15 = 16 5\5 - 5 2\5 = 11 3\5 + 2 6\15 = 11 18\30 + 2 12\30 = 13 30\30 = 14
у + 5\7 = 3\5 + 1\10
у + 5\7 = 6\10 + 1\10
у + 5\7 = 7\10
у = 7\10 - 5\7
у = 49\70 - 50\70
у = -1\70
26 5\8 + х = 30
х = 30 - 26 5\8
х = 29 8\8 - 26 5\8
х = 3 3\8
Пошаговое объяснение:
1 пример:
1) -5/6 + 1. 3/5 = -25/30 + 1. 18/30 = -25/30 + 48/30 = 23/30
2) -4/5 - 1,2 = -4/5 - 1. 2/10 = -4/5 - 1. 1/5 = -1. 5/5 = -2
3) 23/30 * (-2) = 23/15 * (-1) = -23/15 = -1. 8/15
4) -3. 1/4 + (-2. 2/11) = -3. 11/44 - 2. 8/44 = -5. 19/44
5) -5. 19/44 - (-1. 8/15) =
-5. 19/44 + 1. 8/15 =
-5. 285/660 + 1. 352/660 = -4. 945/660 + 1. 352/660 = 3. 593/660
Пример 2:
1) -2. 2/5 - 1. 1/3 = -2. 6/15 - 1. 5/15 = -3. 11/15
2) -3. 11/15 * 1. 17/28 = -56/15 * 45/28 = -2/1 * 3/1 = -6/1 = -6
3) 5. 2/3 - 8. 3/4 = 5. 8/12 - 8. 9/12 = -3. 1/12
4) -8. 3/4 + 5. 2/3 = -8. 9/12 + 5. 8/12 = -3. 1/12
5) -3. 1/12 * (-3. 1/12) = -37/12 * (-37/12) = 1369/144 = 9. 73/144
6) -6 + 9. 73/144 = 3. 73/144
