2 5 4. Найдите решения уравнений (35-36): 35. 1) x + 8,34 = 10; 2) 9,26 + x = 13,1; 3) x + 27% - 52; 4) 6,2 + x = 11; 5) x + 71 5) x + 7118 = 72 35 72; 6) 40 + х = 61 61 15 7) x - 19,5 = 2,85; 8) 40,02 - x = 37,7; 4 9 3 9) х - 31 = 13 10) 81 31 21 х = 79 — 28. 12 31
9,4 +1¹⁷/₂₀ = ⁹⁴/₁₀ + ³⁷/₂₀ = ⁹⁴ˣ²/₂₀ + ³⁷/₂₀ = ¹⁸⁸/₂₀ + ³⁷/₂₀ = ¹⁸⁸⁺³⁷/₂₀ =²²⁵/₂₀
²²⁵/₂₀ : 1⁷/₈ = ²²⁵/₂₀ : ¹⁵/₈ = ²²⁵/₂₀ × ⁸/₁₅ = ²²⁵ˣ⁸/₂₀ₓ₁₅ = ²⁴/₄ = 6
24 × ³/₈ = ²⁴/₁ × ³/₈ = ²⁴ˣ³/₁ₓ₈ = ³ˣ³/₁ = ⁹/₁ = 9
9 + 6 = 15
(15¹/₃ - 8⁵/₁₈) × 2⁴/₇ : 6¹/₂₁ - 2⁵/₈ = 0,375
15¹/₃ - 8⁵/₁₈ =⁴⁶/₃ - ¹⁴⁹/₁₈ =⁴⁶ˣ⁶/₁₈ - ¹⁴⁹/₁₈ = ²⁷⁶/₁₈ - ¹⁴⁹/₁₈ = ²⁷⁶⁻¹⁴⁹/₁₈= ¹²⁷/₁₈
¹²⁷/₁₈ × 2⁴/₇ = ¹²⁷/₁₈ × ¹⁸/₇ = ¹²⁷ˣ¹⁸/₁₈ₓ₇ = ¹²⁷/₇
¹²⁷/₇ : 6¹/₂₁= ¹²⁷/₇ : ¹²⁷/₂₁ = ¹²⁷/₇ × ²¹/₁₂₇= ¹²⁷ˣ²¹/₇ₓ₁₂₇ = ²¹/₇ = 3
3 - 2⁵/₈ = ³/₈ = 0,375