Respostas

2013-12-09T02:38:48-02:00
A)
log27
log(3 . 3 . 3)
log3 + log3 + log3
y + y + y = 3y

b)
log12
log(2 . 2 . 3)
log2 + log2 + log3
x + x + y =
2x + y

c)
log9
log(3 . 3)
log3 + log3
y + y = 2y

d)
log8
log(2.2.2)
log2 + log2 + log2
x + x + x = 3x

Beleza..