Hi I apologize for yet another question but my lesson book is terribly vague and does not provide examples so I'm not quite sure how to proceed with this problem.

Problem:

I haven't gotten into logs yet so I obviously need like bases so I've done this:

Which gives me

if what I did is right than I'm thinking I should expand the brackets move the 7x over to make it =0 and factor?

Thanks for taking a look!