3=|r-5|

Lösung

3 = ∣ r - 5 ∣

r = 2 or r = 8

Schritte zur Lösung

3 = ∣ r - 5 ∣

Tausche die Seiten

∣ r - 5 ∣ = 3

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

r - 5 = - 3 or r - 5 = 3

r - 5 = - 3 or r - 5 = 3

r = 2 or r = 8

- ∣ 3 x ∣ x = 8

so l v e f or x, ∣ x ∣ = 2 q

so l v e f or x, ∣ x ∣ = 2 Q

∣ - 4 x - 5 ∣ = 7

∣ x ∣ + 9 = - 15