The sum of two numbers is 18 and the difference is 8

x = 13 and y = 5

Step-by-step explanation:

x + y = 18

x - y = 8

Step 1:  Find y

x = 18 - y

(18 - y) - y = 8

18 - y - y - 18 = 8 - 18

-2y / -2 = -10 / -2

y = 5

Step 2:  Plug into x + y = 18 to get x

x + 5 - 5 = 18 - 5

x = 13

 x = 13 and y = 5

in mathematics, a constraint is a condition of an optimization problem that the solution must satisfy. there are several types of constraints—primarily equality constraints, inequality constraints, and integer constraints. the set of candidate solutions that satisfy all constraints is called the feasible set.

hoped i'm right lol