Пошаговое объяснение:
1. 67/84
2. 59/216
3. 31/42
4. 907/1430
5. 1219/2100
6. 217/400
1. 25/28 - 2/21 = 75/84 - 8/84 = 67/84
2. 41/54 - 35/72 = 164/216 - 105/216 = 59/216
3. 20/21 - 3/14 = 40/42 - 9/42 = 31/42
4. 40/143 + 30/110 = 400/1430 + 507/1430 = 907/1430
5. 43/140 + 41/150 = 645/1430 + 574/1430 = 1219/2100
6. 73/80 - 37/100 = 365/400 - 148/400 = 217/400
Пошаговое объяснение:
1. 67/84
2. 59/216
3. 31/42
4. 907/1430
5. 1219/2100
6. 217/400
Пошаговое объяснение:
1. 25/28 - 2/21 = 75/84 - 8/84 = 67/84
2. 41/54 - 35/72 = 164/216 - 105/216 = 59/216
3. 20/21 - 3/14 = 40/42 - 9/42 = 31/42
4. 40/143 + 30/110 = 400/1430 + 507/1430 = 907/1430
5. 43/140 + 41/150 = 645/1430 + 574/1430 = 1219/2100
6. 73/80 - 37/100 = 365/400 - 148/400 = 217/400