2^{x-1}=8

Lösung

2^{x - 1} = 8

x = 4

Schritte zur Lösung

2^{x - 1} = 8

Wende Exponentenregel an

x - 1 = 3

Löse

x - 1 = 3 : x = 4

x = 4

9^{2 x - 1} = 2 7^{x + 2}

2^{x} = 125

7^{9 x + 7} = 2

so l v e f or x, y = 3^{x}

so l v e f or x, 7^{x - 1} = e^{y}