13/13 = 11 - 2.5 = -1.5
1/2 = 0.525/84 = 0.29761904761904760.5 - 0.2976190476190476 ≈ 0.2024
Ответ: -1.5 и 0.2024
13/13 = 1
1 - 2.5 = -1.5
1/2 = 0.5
25/84 = 0.2976190476190476
0.5 - 0.2976190476190476 ≈ 0.2024
Ответ: -1.5 и 0.2024