|k-9|=4

Lösung

∣ k - 9 ∣ = 4

k = 5 or k = 13

Schritte zur Lösung

∣ k - 9 ∣ = 4

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

k - 9 = - 4 or k - 9 = 4

k - 9 = - 4 or k - 9 = 4

k = 5 or k = 13

∣ 2 \cdot x ∣ = x + 2

\frac{1}{2} x = 9

so l v e f or x, 3 - y = ∣ x ∣

so l v e f or x, f = ∣ x - 2 ∣

2 ∣ 4 - m ∣ = 3 m