9=|3k|

Lösung

9 = ∣ 3 k ∣

k = - 3 or k = 3

Schritte zur Lösung

9 = ∣ 3 k ∣

Tausche die Seiten

∣ 3 k ∣ = 9

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

3 k = - 9 or 3 k = 9

3 k = - 9 or 3 k = 9

k = - 3 or k = 3

3 ∣ x - 1 ∣ - 1 = - 11

so l v e f or x, ∣ 3 - 2 x ∣ = 7

2 x^{2} - 9 x - 5 = 0

∣ v ∣ + 13 = 21

∣ 4 - 5 x ∣ = 4