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19-05-2016
Mathematics

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solve 7(k- 3) = 3k - 5

Respuesta :

19-05-2016

[tex]7(k- 3) = 3k - 5\\7(k)-7(3) = 3k-5\\7k - 21=3k-5\\7k-3k-21 =3k-3k-5\\4k-21=-5\\4k-21+21=-5+21\\4k=16\\\frac{4k}{4} =\frac{16}{4}\\\\\boxed{\bf{k=4}}[/tex]

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