|-9n-9|=72

Lösung

∣ - 9 n - 9 ∣ = 72

n = - 9 or n = 7

Schritte zur Lösung

∣ - 9 n - 9 ∣ = 72

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

- 9 n - 9 = - 72 or - 9 n - 9 = 72

- 9 n - 9 = - 72 or - 9 n - 9 = 72

n = - 9 or n = 7

- 2 ∣ n ∣ = - 20

- 6 ∣ 5 - 2 x ∣ = - 9

- 7 + ∣ 5 - 9 x ∣ = 51

x^{2} = ∣ x - 2 ∣

∣ - 2 z - 10 ∣ + 5 = 7