(|8+10k|)/8 =1

Lösung

\frac{∣ 8 + 10 k ∣}{8} = 1

k = - \frac{8}{5} or k = 0

Dezimale

k = - 1.6, k = 0

Schritte zur Lösung

\frac{∣ 8 + 10 k ∣}{8} = 1

Multipliziere beide Seiten mit

8

∣ 8 + 10 k ∣ = 8

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

8 + 10 k = - 8 or 8 + 10 k = 8

8 + 10 k = - 8 or 8 + 10 k = 8

k = - \frac{8}{5} or k = 0

∣ 4 x ∣ + 9 = 9

∣ x - 15 ∣ = x^{2} - 15

∣ 9 - x ∣ - 15 = - 7

3 ∣ x - 7 ∣ - 2 = 4

∣ a + 7 ∣ = 15