Andre came up with the following puzzle. “I am three years younger than my brother, and I am 2 years older than my sister. My mom's age is one less than three times my brother's age. When you add all our ages, you get 87. What are our ages?” Jada writes this equation for the sum of the ages:

(x) + (x + 3) + (x - 2) + 3(x + 3) - 1 = 87

Match the meaning to each term of the equation.

x

x + 3

(x - 2)

3(x + 3) - 1

87