|-2a+1|=17

Lösung

∣ - 2 a + 1 ∣ = 17

a = - 8 or a = 9

Schritte zur Lösung

∣ - 2 a + 1 ∣ = 17

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

- 2 a + 1 = - 17 or - 2 a + 1 = 17

- 2 a + 1 = - 17 or - 2 a + 1 = 17

a = - 8 or a = 9

2 ∣ x - 4 ∣ + 8 = 18

∣ 1 - 7 x ∣ = 13

∣ 5 + b ∣ = 1

∣ 2 x - 7 ∣ = 5

\frac{x}{7} = 3