1) 2 ³/₂₀ + 1 ⁵/₁₆ = 43 + 21 =43*4 + 21*5 = 172+105 =277
20 16 80 80 80
2) 30 - 2 ³/₁₀ = 30 - ²³/₁₀ = 300-23 = 277
10 10
3) 5 ¹/₇ * 3 ¹⁷/₂₀ = 36 * 77 = 9 * 11 = 99
7 20 1 * 5 5
4) 277 : 277 = 277 * 10 = 1
80 10 80 277 8
5) 1 + 99 = 5 + 99*8 = 5+792 = 797
8 5 40 40 40
6) 797 - 14 ³/₂₀ = 797 - 283 = 797 - 283*2 = 797-566 = 231 = 5 ³¹/₄₀
40 40 20 40 40 40
Ответ: 5 ³¹/₄₀