-9|-x+9|=-27

Lösung

- 9 ∣ - x + 9 ∣ = - 27

x = 6 or x = 12

Schritte zur Lösung

- 9 ∣ - x + 9 ∣ = - 27

Teile beide Seiten durch

- 9

∣ - x + 9 ∣ = 3

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

- x + 9 = - 3 or - x + 9 = 3

- x + 9 = - 3 or - x + 9 = 3

x = 6 or x = 12

2 x - 7 = ∣ x + 1 ∣

5 ∣ x - 4 ∣ = 12

- ∣ x - 2 ∣ = 0

5 ∣ 6 x + 7 ∣ + 4 = 29

∣ - 3 x + 6 ∣ - 5 = 13