4=|r+49|

Lösung

4 = ∣ r + 49 ∣

r = - 53 or r = - 45

Schritte zur Lösung

4 = ∣ r + 49 ∣

Tausche die Seiten

∣ r + 49 ∣ = 4

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

r + 49 = - 4 or r + 49 = 4

r + 49 = - 4 or r + 49 = 4

r = - 53 or r = - 45

x^{2} = x^{2}

∣ - 2 x - 5 ∣ - 2 = 5

∣ 4 x - 40 ∣ - 2 = 13

5 x + ∣ x + 3 ∣ = 13

2 ∣ 2 x - 2 ∣ = 16