|3r+10|=20

Lösung

∣ 3 r + 10 ∣ = 20

r = - 10 or r = \frac{10}{3}

Dezimale

r = - 10, r = 3.33333 \dots

Schritte zur Lösung

∣ 3 r + 10 ∣ = 20

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

3 r + 10 = - 20 or 3 r + 10 = 20

3 r + 10 = - 20 or 3 r + 10 = 20

r = - 10 or r = \frac{10}{3}

- 2 ∣ x ∣ = 10

∣ x + 3 ∣ + 9 = 25

∣ 3 x - 2 ∣ = x + 2

∣ 5 x - 1 ∣ = 9

∣ 5 x - 1 ∣ = 4