|-3b|=15

Lösung

∣ - 3 b ∣ = 15

b = - 5 or b = 5

Schritte zur Lösung

∣ - 3 b ∣ = 15

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

- 3 b = - 15 or - 3 b = 15

- 3 b = - 15 or - 3 b = 15

b = - 5 or b = 5

3 ∣ x + 9 ∣ = 15

4 + ∣ 9 x - 3 ∣ = 28

∣ 2 - 3 x ∣ + 2 = 9

- 4 ∣ 8 - 5 n ∣ = - 13

∣ 2 x + 5 ∣ - 18 = - 3