|7+7v|=21

Lösung

∣ 7 + 7 v ∣ = 21

v = - 4 or v = 2

Schritte zur Lösung

∣ 7 + 7 v ∣ = 21

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

7 + 7 v = - 21 or 7 + 7 v = 21

7 + 7 v = - 21 or 7 + 7 v = 21

v = - 4 or v = 2

\frac{∣ x + 3 ∣}{7} - 2 = 3

2 - ∣ 2 w + 8 ∣ = 6

∣ 17 + 8 x ∣ - 64 = - 32

∣ 6 v - 3 ∣ + 15 = 54

so l v e f or x, 2 ∣ x ∣ + y = 1