Question

Encontre o valor de x:

Answer 1

Resposta:

$\frac{7}{49} = 7^{x} \\\\\frac{7}{7^{2} } = 7^{x} \\\\\\7^{1-2} = 7^{x}\\\\7^{-1} = 7^{x}\\\\\\x=-1$

Answer 2

Resposta:

7/49 =7^x

7/7²=7^x

7¹⁻²=7^x

7⁻¹=7ˣ

x=-1