Help Needed Understanding Logs

I am requesting help understanding natural logs. I understand that if you have lets say

ln a = b

It can be rewritten as

a = e^b

What I would like to know is if there is any way I can simply a function with natural logs in it,

So if I had any function lets say

ln x = 10 - .5 ln A + .75 ln B - 1 ln C

Is there any way I could simplify that into normal terms without a long confusing jumble? If I had inputs, how do I go about solving a function like the above?

My understanding of natural logs is limited.

Thanks for any help.