|3r|=9

Lösung

∣ 3 r ∣ = 9

r = - 3 or r = 3

Schritte zur Lösung

∣ 3 r ∣ = 9

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

3 r = - 9 or 3 r = 9

3 r = - 9 or 3 r = 9

r = - 3 or r = 3

∣ 2 x ∣ = x^{2} + 2 x - 5

2 ∣ x - 3 ∣ - 1 = 5

∣ 15 + x ∣ = - 2 x + 3

1 - 2 x^{2} = ∣ x ∣

8 - 7 ∣ 5 n - 1 ∣ = 8