Question: what is the algebraic expression for 6 more than twice a number?
Answer: The number (x) in: "6 more than twice a number is 36" is what we are solving here. In other words, you are looking for a number (x) that if you multiply it by two (same as twice) and then add 6, you get 36. The answer above is correct, because twice 15 is 30, and 6 more than 30 is in fact 36.