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Najlepsze rozwiązanie

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  rzbyszek 8.3.2011 (21:28)

  \frac {x}{4} - \frac {1}{4} = 2
  
  \frac {x}{4}=2+ \frac {1}{4}
  
  \frac {x}{4}=2 \frac {1}{4}
  
  \frac {x}{4}= \frac {9}{4}
  
  x=9
  
  
  
  \frac {x}{5} - 3 = x + \frac {1}{5}
  
  \frac {x}{5}-x=3+ \frac {1}{5}
  
  \frac {x}{5}=3 \frac {1}{5}
  
  \frac {x}{5}= \frac {16}{5}
  
  x=16
  
  
  
  \frac {5}{6} ( x - 1) = 4
  
  \frac {5}{6}x- \frac {5}{6}=4
  
  \frac {5}{6}x=4+ \frac {5}{6}
  
  \frac {5}{6}x=4 \frac {5}{6}
  
  \frac {5}{6}x= \frac {29}{6}
  
  x= \frac {29}{6} \cdot \frac {6}{5}
  
  x= \frac {29}{5}
  
  x=5 \frac {4}{5}
  
  
  
  - \frac {1}{2} ( -x - 6 ) = - x
  
  \frac {1}{2}x+3=-x
  
  \frac {1}{2}x+x=-3
  
  \frac {3}{2}x=-3
  
  x=-3 \cdot \frac {2}{3}
  
  x=-2

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