Question

Solve the equation of log (2x + 4) = log (3x -12) with explanation please.

Answer 1

log a = log b when a=b

Answer 2

5x-8 thats the farthest I got

Answer 3

then you took a wrong turn near albuquerque ....

Answer 4

2x+4 = 3x-12 does not lose its equality ...

Answer 5

@amistre64
But you cannot JUST cancel log!! :D

Answer 6

log is a one to one function ...

Answer 7

your not canceling perse; you are simple equating the arguments

Answer 8

log a = log b, only when a=b

Answer 9

Okay. :)

Answer 10

lets assume that a does not equal b:

log a = log b

log a - log b = 0

log (a/b) = 0 when a/b = 1

a/b = 1

a = b, which is a constradiction to a not= b

Answer 11

Exactly what I was jujst going to type! :D
Haha.. :D

Answer 12

@Ratedover
Did you get it?