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Verified Answer :

dasetka

\(\frac{k}{8}\) + 1 - k = 19   Subtract 1 from both sides
      \(\frac{k}{8}\) - k = 18   Multiply both sides by 8
                                  k - 8k = 144  Subtract 
                                      -7k = 144   Divide both sides by -7
                                         k = -\(\frac{144}{7}\)
                                         k ≈ 20.57