|-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

8 = ∣ s ∣ - 2

0 = - ∣ g + 5 ∣

∣ r ∣ = 9

- 5 + 9 ∣ - 5 x - 8 ∣ = - 77

∣ 3 X - 5 ∣ + X - 7 = 0