Question

If Ben is x years old, the expression
gives the sum of Ben’s and Teresa’s ages.

If Ben is 7 years old, the sum of Ben’s and Teresa’s ages is
years.

Answer 1

was there en expression given ?

Answer 2

No

Answer 3

Oh, interesting. So it's like "Ben is x years old. Ben is 7." and gives no info as to how that relates to Teresa's age

Answer 4

Well yeah