Решение задачи #61609
15/7/15+4/9/17
15 : 7/15 + 4 : 9/17 = 15 * 15/7 + 4 * 17/9 = 225/7 + 68/9 = 2025/63 + 476/63 = 2501/63 = 39 44/63
| 15 : | 7 15 | + 4 : | 9 17 | = | 15 * 15 7 | + | 4 * 17 9 | = |
| = | 225 * 9 63 | + | 68 * 7 63 | = | 2501 63 | =39 | 44 63 |
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