|2x+3|=15

Lösung

∣ 2 x + 3 ∣ = 15

x = - 9 or x = 6

Schritte zur Lösung

∣ 2 x + 3 ∣ = 15

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

2 x + 3 = - 15 or 2 x + 3 = 15

2 x + 3 = - 15 or 2 x + 3 = 15

x = - 9 or x = 6

9 - 3 ∣ x + 3 ∣ = 1

7 ∣ x - 2 ∣ = 10

∣ x - 5 ∣ = 5

1 + ∣ 2 + x ∣ = 9

5 - 8 ∣ 2 x ∣ = - 75