Question

5^3x =1/125
Cinco ao cubo igual a um sobe 125

Answer 1

5³ˣ = 1/125

5³ˣ = 125⁻¹

5³ˣ = (5³)⁻¹

5³ˣ = 5⁻³

Cancela as bases.

3x = -3

x = -3/3

x = -1

Resposta: X vale -1

Answer 2

${5}^{3x} = \frac{1}{125}$

${5}^{3x} = \frac{1}{ {5}^{3} }$

${5}^{3x} = {5}^{ - 3}$

3x=-3

x=-3/3

x=-1