Respostas

2013-04-17T21:29:43-03:00

Temos:

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

3¹ = (x + 3)/(x - 1)
3.(x - 1) = (x + 3)
3x - 3 = x + 3
3x - x = 3 + 3
2x = 6
x = 6/2
x = 3