-2|5x|=-18

Lösung

- 2 ∣ 5 x ∣ = - 18

x = - \frac{9}{5} or x = \frac{9}{5}

Dezimale

x = - 1.8, x = 1.8

Schritte zur Lösung

- 2 ∣ 5 x ∣ = - 18

Teile beide Seiten durch

- 2

∣ 5 x ∣ = 9

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

5 x = - 9 or 5 x = 9

5 x = - 9 or 5 x = 9

x = - \frac{9}{5} or x = \frac{9}{5}

- 7 ∣ y + 2 ∣ = - 49

11 ∣ x - 8 ∣ - 7 = - 48

∣ 4 x + 12 ∣ - 4 = 4

4 ∣ x ∣ - 9 = 7

2 ∣ - 1 + n ∣ + 9 = 11