6-66. during this chapter, you will use your new solving skills to solve word problems. Think about the and use the strategies you already have to answer the questions below.
a. andy is 4 years older than eduardo. if andy is x years old, write an expression to represent eduardo's age.
b. in eduardo's collection, the number of butterflies is 12 more than twice the number of moths. if there are x moths, write an expression to represent the number of butterflies he has.