|2r+5|=4

Lösung

∣ 2 r + 5 ∣ = 4

r = - \frac{9}{2} or r = - \frac{1}{2}

Dezimale

r = - 4.5, r = - 0.5

Schritte zur Lösung

∣ 2 r + 5 ∣ = 4

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

2 r + 5 = - 4 or 2 r + 5 = 4

2 r + 5 = - 4 or 2 r + 5 = 4

r = - \frac{9}{2} or r = - \frac{1}{2}

∣ 8 x - 8 ∣ + 10 = - 14

∣ 2 x - 1 ∣ + 3 = 8

∣ - 5 k ∣ + 3 = 33

∣ - 8 + 2 x ∣ = 10

\frac{5 ∣ g + 6 ∣}{2} = 20