13=|-2x+5|

Lösung

13 = ∣ - 2 x + 5 ∣

x = - 4 or x = 9

Schritte zur Lösung

13 = ∣ - 2 x + 5 ∣

Tausche die Seiten

∣ - 2 x + 5 ∣ = 13

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

- 2 x + 5 = - 13 or - 2 x + 5 = 13

- 2 x + 5 = - 13 or - 2 x + 5 = 13

x = - 4 or x = 9

9 - 2 ∣ 2 x + 1 ∣ = 5

x^{2} + x - 6 = x + 1

∣ 5 x + 7 ∣ - 9 = 3 x

∣ 2 x - 4 ∣ + 8 = x

2 ∣ 9 - 2 x ∣ - 9 = 1