|7x|=21

Lösung

∣ 7 x ∣ = 21

x = - 3 or x = 3

Schritte zur Lösung

∣ 7 x ∣ = 21

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

7 x = - 21 or 7 x = 21

7 x = - 21 or 7 x = 21

x = - 3 or x = 3

5 f - ∣ 3 f + 4 ∣ = 20

∣ x - 2 ∣ = 2 - (x - 2)^{2}

3 + 4 ∣ x - 2 ∣ = 35

∣ 5 - x ∣ = 4

∣ 4 x + 9 ∣ - 6 = x