11-09-2018
Mathematics

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7 - 7k - 6k = -7k - 7k

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Аноним Аноним

11-09-2018

You can cancel out a -7k term, because it appears in both sides:

[tex] 7-6k = -7k [/tex]

Now add 6k to both sides:

[tex] 7 = -k [/tex]

change sign to both sides:

[tex] k = -7 [/tex]

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