|3x+7|=91

Lösung

∣ 3 x + 7 ∣ = 91

x = - \frac{98}{3} or x = 28

Dezimale

x = - 32.66666 \dots, x = 28

Schritte zur Lösung

∣ 3 x + 7 ∣ = 91

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

3 x + 7 = - 91 or 3 x + 7 = 91

3 x + 7 = - 91 or 3 x + 7 = 91

x = - \frac{98}{3} or x = 28

0 = - 2 ∣ r - 70 ∣

∣ x + 5 ∣ + 3 = 14

∣ x + 5 ∣ = 55

∣ 5 x - 4 ∣ + 2 = 9

∣ 3 x + 7 ∣ = 13