|7x+4|=1

Lösung

∣ 7 x + 4 ∣ = 1

x = - \frac{5}{7} or x = - \frac{3}{7}

Dezimale

x = - 0.71428 \dots, x = - 0.42857 \dots

Schritte zur Lösung

∣ 7 x + 4 ∣ = 1

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

7 x + 4 = - 1 or 7 x + 4 = 1

7 x + 4 = - 1 or 7 x + 4 = 1

x = - \frac{5}{7} or x = - \frac{3}{7}

\frac{∣ x + 4 ∣}{10} = - 1

7 ∣ 3 x + 7 ∣ + 9 = - 47

so l v e f or x, ∣ x - y ∣ = ∣ x + y ∣

∣ - 9 s - 9 ∣ = 10

∣ 3 k - 8 ∣ = 4