|2t+7|=5

Lösung

∣ 2 t + 7 ∣ = 5

t = - 6 or t = - 1

Schritte zur Lösung

∣ 2 t + 7 ∣ = 5

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

2 t + 7 = - 5 or 2 t + 7 = 5

2 t + 7 = - 5 or 2 t + 7 = 5

t = - 6 or t = - 1

\frac{x}{7} + 4 = 5

∣ 900 - 5 u ∣ = 200

∣ x + 4 ∣ = - 3 x

9 + 6 ∣ - 8 x + 7 ∣ = 3

4 ∣ 3 x - 4 ∣ = 20