8=|-4u|

Lösung

8 = ∣ - 4 u ∣

u = - 2 or u = 2

Schritte zur Lösung

8 = ∣ - 4 u ∣

Tausche die Seiten

∣ - 4 u ∣ = 8

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

- 4 u = - 8 or - 4 u = 8

- 4 u = - 8 or - 4 u = 8

u = - 2 or u = 2

∣ a + 5 ∣ = 0

2 ∣ x - 6 ∣ + 4 = 8

∣ 8 x + 5 ∣ = 21

- 3 ∣ x - 9 ∣ = - 27

7 ∣ x + 2 ∣ = - 70