Question

resolver para x.
${7}^{3 - x} = {5}^{ x + 1}$
​

Answer 1

Respuesta:

$1.18927...$

Explicación paso a paso:

$7^{3-x}=5^{x+1}\\\\\left(3-x\right)\ln \left(7\right)=\left(x+1\right)\ln \left(5\right)\\\\x=\frac{3\ln \left(7\right)-\ln \left(5\right)}{\ln \left(35\right)}\\\\x=1.18927...$