Odpowiedź:
a₁ = 3x - 1
a₂ = 2 - 4x
a₃ = x + 5
a₃ - a₂ = a₂ - a₁
x + 5 - (2 - 4x) = 2 - 4x - (3x- 1)
x + 5 - 2 + 4x = 2 - 4x - 3x + 1
5x + 3 = - 7x + 3
5x + 7x = 3- 3
12x = 0
x = 0
sprawdzenie
a₁ = 3 * 0 -1 = - 1
a₂ = 2 - 4 * 0 = 2
a₃ = 0 +5 = 5
a₃ - a₂ = a₂ - a₁
5 - 2 = 2 - (- 1)
3 = 2 + 1
3 =3
L = P