|-9+n|=19

Lösung

∣ - 9 + n ∣ = 19

n = - 10 or n = 28

Schritte zur Lösung

∣ - 9 + n ∣ = 19

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

- 9 + n = - 19 or - 9 + n = 19

- 9 + n = - 19 or - 9 + n = 19

n = - 10 or n = 28

∣ 3 + 7 x ∣ + 4 = 22

∣ - 4 x ∣ = 20

x ∣ x ∣ - 2 x + 1 = 4

2 x + 7 = ∣ x + 1 ∣

∣ 2 x - 3 ∣ = 2 x - 3