Question

Respondam por favor com a conta

Log na base 1/3 (x-1) = -2

Answer 1

$Resolu\c{c}\~ao\to \left\{\begin{array}{ccc}log_{ \frac{1}{3}}\ (x-1)=-2 }\\\\( \frac{1}{3} )^{-2} = x-1\\\\x-1 = 3^{2}\\\\x-1 = 9\\\\\boxed{\boxed{x = 10}}\end{array}\right$

Espero ter ajudado. :))