-3|x-9|=-27

Lösung

- 3 ∣ x - 9 ∣ = - 27

x = 0 or x = 18

Schritte zur Lösung

- 3 ∣ x - 9 ∣ = - 27

Teile beide Seiten durch

- 3

∣ x - 9 ∣ = 9

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

x - 9 = - 9 or x - 9 = 9

x - 9 = - 9 or x - 9 = 9

x = 0 or x = 18

7 ∣ x + 2 ∣ = - 70

∣ 4 + 8 c ∣ - 15 = - 7

3 ∣ x - 4 ∣ = 33

- ∣ 3 x - 2 ∣ + 4 = 14

- ∣ 4 x - 9 ∣ = 3