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marinawebp43hb5
@marinawebp43hb5
July 2022
1
10
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Решите уравнения:
а) х - 3.5 = -2.1
б) 5целых 4/15 + у = - 2целых 5/12
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Answers & Comments
nosok666
А)
х=-3,5-2,1
х=1.4
б)
5⁴/₁₅+у=-2⁵/₁₂
у= -5⁴/₁₅-2⁵/₁₂=-(5⁴/₁₅+2⁵/₁₂)=-(7+¹⁶/₆₀+²⁵/₆₀)=-7⁴¹/₆₀
1в.(3,9-5,8)-(-¹/₄₅-⁷/₉)=-1,9+¹/₄₅+³⁵/₄₅=-1,9+36/45=-1,9+0,8=-1,1
х-3,5=-2,1
х=3,5-2,1
х=1,4
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Answers & Comments
х=1.4
б) 5⁴/₁₅+у=-2⁵/₁₂
у= -5⁴/₁₅-2⁵/₁₂=-(5⁴/₁₅+2⁵/₁₂)=-(7+¹⁶/₆₀+²⁵/₆₀)=-7⁴¹/₆₀
1в.(3,9-5,8)-(-¹/₄₅-⁷/₉)=-1,9+¹/₄₅+³⁵/₄₅=-1,9+36/45=-1,9+0,8=-1,1
х-3,5=-2,1
х=3,5-2,1
х=1,4