|a+7|=2

Lösung

∣ a + 7 ∣ = 2

a = - 9 or a = - 5

Schritte zur Lösung

∣ a + 7 ∣ = 2

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

a + 7 = - 2 or a + 7 = 2

a + 7 = - 2 or a + 7 = 2

a = - 9 or a = - 5

s im pl i f y \frac{5}{4} + \frac{3}{4}

f a c t or r^{2} - 6 r - 9 s^{2} + 9

\frac{3 y + 5}{2} - \frac{3 y + 2}{5} = \frac{3}{10}

12 y - 4 = 15 y + 8

15 y = 25 y^{2}