-4|7-a|=-36

Lösung

- 4 ∣ 7 - a ∣ = - 36

a = - 2 or a = 16

Schritte zur Lösung

- 4 ∣ 7 - a ∣ = - 36

Teile beide Seiten durch

- 4

∣ 7 - a ∣ = 9

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

7 - a = - 9 or 7 - a = 9

7 - a = - 9 or 7 - a = 9

a = - 2 or a = 16

∣ x + 3 ∣ = x - 5

∣ x - 6 ∣ = 11

∣ x - 6 ∣ = 10

x^{2} - 6 x - 4 = 12

∣ 2 x + 5 ∣ + 3 = x