Question

qual é o log de 1/3(x-1)=-2

Answer 1

log 1/3(x-1) = -2

10^ -2 = 1/3(x-1)
1/10^2 = 1/3(x - 1)
1/100 = 1/3(x-1)
3 = 100(x-1)
3 = 100x - 100
100x = 100 + 3
100x = 103
x = 103/100
x = 1,03

Espero ter ajudado