|9-x|=20

Lösung

∣ 9 - x ∣ = 20

x = - 11 or x = 29

Schritte zur Lösung

∣ 9 - x ∣ = 20

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

9 - x = - 20 or 9 - x = 20

9 - x = - 20 or 9 - x = 20

x = - 11 or x = 29

2 ∣ x ∣ - 5 = 7

∣ 2 x + 3 ∣ = 7 + x

5 + ∣ 2 - x ∣ = 7

∣ 3 x + 12 ∣ = - 6 x

5 ∣ 3 n + 2 ∣ - 10 = 10