выполните действия (12 1/8-5 5/16+3 1/4):(-13 5/12)+6,35/(2 2/3+3/5)*(-2 1/7). Created by avromidi0910. matematika-ru

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выполните действия (12 1/8-5 5/16+3 1/4):(-13 5/12)+6,35/(2 2/3+3/5)*(-2 1/7)

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(12 1/8-5 5/16+3 1/4):(-13 5/12)+6,35/(2 2/3+3/5)*(-2 1/7)= - 1,8
1) 12¹/₈-5⁵/₁₆ = 12²/₁₆-5⁵/₁₆ = 11¹⁸/₁₆-5⁵/₁₆ = 6¹⁸⁻⁵/₁₆ = 6¹³/₁₆
2) 6¹³/₁₆ +3¹/₄ = 6¹³/₁₆ +3⁴/₁₆ = 9¹³⁺⁴/₁₆ = 9¹⁷/₁₆ = 10¹/₁₆
3) 10¹/₁₆ :(-13⁵/₁₂) = ¹⁶¹/₁₆ :(-¹⁶¹/₁₂) = ¹⁶¹/₁₆ ×(-¹²/₁₆₁) = -¹²/₁₆ = - ³/₄
4) 2²/₃+³/₅ = ⁸/₃+³/₅ = ⁴⁰/₁₅ + ⁹/₁₅ = ⁴⁹/₁₅
5) ⁴⁹/₁₅×(-2¹/₇) = ⁴⁹/₁₅×(-¹⁵/₇) = ⁴⁹/₁₅×(-¹⁵/₇) = -⁴⁹ˣ¹⁵/₁₅ₓ₇ = -⁴⁹/₇ = - 7
6) 6,35 : (-7) = ⁶³⁵/₁₀₀ : (-⁷/₁) = ⁶³⁵/₁₀₀ ˣ (-¹/₇) = -⁶³⁵ˣ¹/₁₀₀ₓ₇ = -⁶³⁵/₇₀₀ = -¹²⁷/₁₄₀
7) -³/₄ + (-¹²⁷/₁₄₀) = -³/₄ -¹²⁷/₁₄₀ = -³ˣ³⁵/₁₄₀ - ¹²⁷/₁₄₀ = ⁻¹⁰⁵⁻¹²⁷/₁₄₀ = -²³²/₁₄₀ = -⁶³/₃₅= - 1²⁸/₃₅ = -1⁴/₅ = -1,8

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