|a+7|=5

Lösung

∣ a + 7 ∣ = 5

a = - 12 or a = - 2

Schritte zur Lösung

∣ a + 7 ∣ = 5

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

a + 7 = - 5 or a + 7 = 5

a + 7 = - 5 or a + 7 = 5

a = - 12 or a = - 2

∣ x + 1 ∣ = 3 x

4 ∣ 2 x - 4 ∣ = 32

5 - 8 ∣ a + 1 ∣ = - 67

x^{2} = 0

x^{2} = 4