In some country the budget for defense exceeded the budget for education by ​$662.6 billion.

Question

If x represents the budget for​ education, in billions of​ dollars, how can the budget for defense be​ represented?

Answer 1

y = x + 662.6 where y = defense budget and x = education budget, measured in billions of dollars

or maybe

D = E + 662.6 where D= defense budget and E = education budget