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dashagirina
@dashagirina
July 2022
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решить уравнение (5 1/7+х)-6 2/3=1 17/21
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belozerova1955
(5¹/₇ +х) - 6²/₃ = 1¹⁷/₂₁
5¹/₇+х= 1¹⁷/₂₁ +6²/₃
х= 1¹⁷/₂₁+6²/₃ - 5¹/₇ ( приведем дроби к знаменателю 21)
х=1¹⁷/₂₁+6¹⁴/₂₁ - 5³/₂₁
х= 7³¹/₂₁- 5³/₂₁
х= 2²⁸/₂₁
х= 2⁴/₃
х= 3¹/₃
Ответ: х=3¹/₃
3 votes
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Answers & Comments
5¹/₇+х= 1¹⁷/₂₁ +6²/₃
х= 1¹⁷/₂₁+6²/₃ - 5¹/₇ ( приведем дроби к знаменателю 21)
х=1¹⁷/₂₁+6¹⁴/₂₁ - 5³/₂₁
х= 7³¹/₂₁- 5³/₂₁
х= 2²⁸/₂₁
х= 2⁴/₃
х= 3¹/₃
Ответ: х=3¹/₃