Please explain how to solve this problem using mathematical language and vocabulary. context: i need to make a 'tiktok' explaining how to solve this problem and it will have to be 1-3 minutes long, but i'll do that part. algebra is so hard for me and i have no idea how to solve these types of problems, so please consider helping me. (this is due march 1st)

also: please dont respond with some random answer that is no way related to the problem, it doesn't help me at all.