21=|5-4b|

Lösung

21 = ∣ 5 - 4 b ∣

b = - 4 or b = \frac{13}{2}

Dezimale

b = - 4, b = 6.5

Schritte zur Lösung

21 = ∣ 5 - 4 b ∣

Tausche die Seiten

∣ 5 - 4 b ∣ = 21

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

5 - 4 b = - 21 or 5 - 4 b = 21

5 - 4 b = - 21 or 5 - 4 b = 21

b = - 4 or b = \frac{13}{2}

5 = ∣ 5 y ∣

∣ 2 x - 3 ∣ = x^{2}

∣ 2 x + 3 ∣ - x = 2

∣ x - 4 ∣ + 2 = 2 x

∣ 3 x - 1 ∣ - 1 = 4 x