|2-7x|=5

Lösung

∣ 2 - 7 x ∣ = 5

x = - \frac{3}{7} or x = 1

Dezimale

x = - 0.42857 \dots, x = 1

Schritte zur Lösung

∣ 2 - 7 x ∣ = 5

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

2 - 7 x = - 5 or 2 - 7 x = 5

2 - 7 x = - 5 or 2 - 7 x = 5

x = - \frac{3}{7} or x = 1

∣ x - 2 ∣ ∣ x + 4 ∣ = 3

4 ∣ 4 x - 3 ∣ = 24

∣ 7 - 3 x ∣ + 10 = 8

so l v e f or y, x = ∣ 5 y ∣

∣ x + 1 ∣ - ∣ x ∣ = 0