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narmina2017
@narmina2017
July 2022
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(1 8/21-19/42-3 5/28)*14/15=-2/1 вроде бы,-7/11*1 5/17:(-1 3/4)решите по ДЕЙСТВИЯМ!заранее спасибо!!))
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Verified answer
(1⁸/₂₁-¹⁹/₄₂-3⁵/₂₈)*¹⁴/₁₅
= - 2,1
1)
1⁸/₂₁-¹⁹/₄₂ = ²⁹/₂₁-¹⁹/₄₂ = ²⁹ˣ²/₄₂-¹⁹/₄₂= ⁵⁸/₄₂-¹⁹/₄₂= ⁵⁸⁻¹⁹/₄₂ = ³⁹/₄₂ = ¹³/₁₄
2) ¹³/₁₄ - 3⁵/₂₈ = ¹³/₁₄ - ⁸⁹/₂₈ = ²⁶/₂₈ - ⁸⁹/₂₈ = ²⁶⁻⁸⁹/₂₈ = - ⁶³/₂₈
3) (-⁶³/₂₈)×¹⁴/₁₅ = - ⁶³ˣ¹⁴/₂₈ₓ₁₅ = - ⁶³/²ˣ¹⁵ = - ⁶³/₃₀ = - ²¹/₁₀ = - 2,1
*************************
-⁷/₁₁×1⁵/₁₇:(-1³/₄
) = -
⁸/₁₇
1)
-⁷/₁₁×1⁵/₁₇ = -⁷/₁₁ײ²/₁₇ = - ⁷ˣ²²/₁₁ₓ₁₇ = - ¹⁴/₁₇
2) (-¹⁴/₁₇) : (-1³/₄) = (-¹⁴/₁₇) : (-⁷/₄) = ¹⁴/₁₇ × ⁴/₇ = ¹⁴ˣ⁴/₁₇ₓ₇ = - ⁸/₁₇
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Answers & Comments
Verified answer
(1⁸/₂₁-¹⁹/₄₂-3⁵/₂₈)*¹⁴/₁₅= - 2,11) 1⁸/₂₁-¹⁹/₄₂ = ²⁹/₂₁-¹⁹/₄₂ = ²⁹ˣ²/₄₂-¹⁹/₄₂= ⁵⁸/₄₂-¹⁹/₄₂= ⁵⁸⁻¹⁹/₄₂ = ³⁹/₄₂ = ¹³/₁₄
2) ¹³/₁₄ - 3⁵/₂₈ = ¹³/₁₄ - ⁸⁹/₂₈ = ²⁶/₂₈ - ⁸⁹/₂₈ = ²⁶⁻⁸⁹/₂₈ = - ⁶³/₂₈
3) (-⁶³/₂₈)×¹⁴/₁₅ = - ⁶³ˣ¹⁴/₂₈ₓ₁₅ = - ⁶³/²ˣ¹⁵ = - ⁶³/₃₀ = - ²¹/₁₀ = - 2,1
*************************
-⁷/₁₁×1⁵/₁₇:(-1³/₄) = - ⁸/₁₇
1) -⁷/₁₁×1⁵/₁₇ = -⁷/₁₁ײ²/₁₇ = - ⁷ˣ²²/₁₁ₓ₁₇ = - ¹⁴/₁₇
2) (-¹⁴/₁₇) : (-1³/₄) = (-¹⁴/₁₇) : (-⁷/₄) = ¹⁴/₁₇ × ⁴/₇ = ¹⁴ˣ⁴/₁₇ₓ₇ = - ⁸/₁₇