|10x-9|=21

Lösung

∣ 10 x - 9 ∣ = 21

x = - \frac{6}{5} or x = 3

Dezimale

x = - 1.2, x = 3

Schritte zur Lösung

∣ 10 x - 9 ∣ = 21

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

10 x - 9 = - 21 or 10 x - 9 = 21

10 x - 9 = - 21 or 10 x - 9 = 21

x = - \frac{6}{5} or x = 3

4 ∣ 7 w + 14 ∣ = 28

∣ x + 3 ∣ + 12 = 5

∣ x + 6 ∣ = 2 x + 6

8 + 2 ∣ 5 x - 10 ∣ = 15

∣ 5 - 7 x ∣ = 9