Question

3^5x+34=81 me ajudem

Answer 1

Deixe ambas as potências com bases iguais e iguale os expoentes.

$\sf3^{5x+34}=81\iff$

$\sf\iff3^{5x+34}=3^4\iff$

$\sf\iff 5x+34=4\iff$

$\sf\iff 5x=4-34\iff$

$\sf\iff 5x=-\,30\iff$

$\iff \red{\boxed{\sf x=-\,6}}.$