|x+9|=12

Lösung

∣ x + 9 ∣ = 12

x = - 21 or x = 3

Schritte zur Lösung

∣ x + 9 ∣ = 12

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

x + 9 = - 12 or x + 9 = 12

x + 9 = - 12 or x + 9 = 12

x = - 21 or x = 3

∣ x + 4 ∣ = 2 x - 1

7 - 8 ∣ r + 6 ∣ = - 89

- 4 ∣ 2 x + 6 ∣ = 16

∣ - 3 + a ∣ = 7

∣ 2 v - 5 ∣ = 7