When multiplying 2 fractions is the product greater than the factors?

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. what is the probability that the applicant who gets the job plays drums or guitar?