-|2x+5|=-7

Lösung

- ∣ 2 x + 5 ∣ = - 7

x = - 6 or x = 1

Schritte zur Lösung

- ∣ 2 x + 5 ∣ = - 7

Teile beide Seiten durch

- 1

∣ 2 x + 5 ∣ = 7

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

2 x + 5 = - 7 or 2 x + 5 = 7

2 x + 5 = - 7 or 2 x + 5 = 7

x = - 6 or x = 1

\frac{∣ 2 x + 2 ∣}{5} = - 3

23 = ∣ b + 4 ∣

∣ 13 p - 6 ∣ = 21

0 = - 2 ∣ 7 n ∣

2 ∣ x - 3 ∣ + 3 = 11