solving 10^x+5=20: what are the steps?

[Tess]

Can anyone tell me the steps of how to solve this problem?

10^x+5=20

Thank you!

 

[galactus]

Subtract 5 from both sides and then use logs.

\(\displaystyle \L\\10^{x}=15\)

\(\displaystyle \L\\xlog(10)=log(15)\)

 

[Tess]

answer

So, would xlog(10)=log(15) be the final answer? Can anything else be done with it?

Tess

 

[galactus]

What about the x?. One more step. I am sorry. If you can't see that, there's not much more I can do.

 

[stapel]

Can anything else be done with it?

Yes: the simple linear part.

If you're not familiar with the techniques for solving linear equations, then you might want to have a serious talk with your academic advisor regarding course placement. You should not have been enrolled in a course covering logarithms when you haven't yet studied one-step linear equations and other prerequisite content.

My best wishes to you.

Eliz.