Sue's age is one year less than half her mother's age. The sum of their ages is 71 years. If x represents Sue's age, which equation can be used to find her age?
Option A would be your answer. We know 71 is the product. We also know that Sues age is one year less than half her mothers age. -1 comes from the problem saying one year less. We can already eliminate the other 3 options at this point.
