37,8 = 37 1/2 (37 целых одна вторая)
1) 37 1/2 * 2/9 = 75/2 * 2/9 = 75/9 = 8 3/9 = 8 1/3
2)37 1/2 * 3/7 = 75/2 * 3/7 = 225/14 = 16 1/14
3)8 1/3 + 16 1/14 = 75/9 + 225/14 = 1050 + 2025/126 = 3075/126 = 25 51/126
4)37 1/2 - 25 51/126 = 75/2 - 3075/126 = 4725 - 3075/126 = 1650/126 = 825/63 = 13 6/63
Ответ: одна сторона =8 1/3,вторая = 16 1/14,а третья = 13 6/63