|d+9|=3

Lösung

∣ d + 9 ∣ = 3

d = - 12 or d = - 6

Schritte zur Lösung

∣ d + 9 ∣ = 3

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

d + 9 = - 3 or d + 9 = 3

d + 9 = - 3 or d + 9 = 3

d = - 12 or d = - 6

∣ 4 + 2 x ∣ = 7

∣ x ∣ = 65

so l v e f or x, 2 ∣ x - 3 ∣ = 5

∣ x - 3 ∣ = 2 - x

0 = ∣ q - 800 ∣