Treść zadania

Najlepsze rozwiązanie

• 

  1 0

  truffelka 17.4.2012 (18:35)

  4x = 48
  x = 12
  
  7x = 2x + 5
  5x = 5
  x = 1
  
  24x + 7 = 20x + 23
  4x = 16
  x = 4
  
  15x + 6 = 11x + 8
  4x = 2
  x = \frac{1}{2}
  
  3x + 2 = 20
  3x = 18
  x = 6
  
  -x + 7 = 5x + 1
  6x = 6
  x = 1
  
  8x + 5 = 7x
  15x = 5
  x = \frac{1}{3}
  
  2(x + 3) = x - 1
  2x + 6 = x - 1
  x = -7
  
  3(x + 6) = 2x + 20
  3x + 18 = 2x + 20
  x = 2
  
  4(x - 2) = 8(x + 1)
  4x - 8 = 8x + 8
  -4x = 16
  x = -4
  
  2 + 3x = 5 - 6x
  9x = 3
  x = \frac{1}{3}
  
  5(2x + 2) = 3(3x + 1)
  10x + 10 = 9x + 3
  x = -7
  
  7(x - 2) - 3x = 6(3x + 1)
  7x - 14 - 3x = 18x + 6
  -14x = 20
  x = \frac{10}{7}
  
  7 + 3x = 2 - 5x
  -2x = -5 | * (-1)
  2x = 5
  x = 2,5
  
  5(2x - 5) + 6(x - 2) = 4(x-5)
  10x - 25 + 6x - 12 = 4x - 20
  12x = 17
  x = \frac{17}{12}
  x = 1\frac{5}{12}

  Dodawanie komentarzy zablokowane - Zgłoś nadużycie