# exp&log functions query

• Mar 30th 2009, 12:18 PM
14041471
exp&log functions query
Can anyone help me with the following question:
log_5 5(6x+1) = 13
So far I have: 6x+1 = log513 since i believe this is the first stange but to know how to proceed...
• Mar 30th 2009, 02:33 PM
masters
Quote:

Originally Posted by 14041471
Can anyone help me with the following question:
log_5 5(6x+1) = 13
So far I have: 6x+1 = log513 since i believe this is the first stange but to know how to proceed...

Hi 14041471,

$\log_55(6x+1)=13$

$\log_5(30x+5)=13$

$30x+5=5^{13}$

$30x=5^{13}-5$

$x=\frac{5^{13}-5}{30}$