|1k-74|=21

Lösung

∣ 1 k - 74 ∣ = 21

k = 53 or k = 95

Schritte zur Lösung

∣ 1 \cdot k - 74 ∣ = 21

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

1 \cdot k - 74 = - 21 or 1 \cdot k - 74 = 21

1 k - 74 = - 21 or 1 k - 74 = 21

k = 53 or k = 95

5 ∣ 2 x - 7 ∣ - 22 = 3

∣ 2 - 4 t ∣ + 2 = 12

\frac{1}{2} x + 8 = 9

b = 1 - ∣ 2 x - 3 ∣

∣ 2 x ∣ - 4 = 8