Answer:
y = 9
x = 14
Step-by-step explanation:
1st equation ⇒ x + y = 23
2nd equation ⇒ x - y = 5
1st equation - 2nd equation;
(x + y) - (x - y) = 23 - 5
x + y - x + y = 18
2y = 18
y = 18/2
y = 9
Substitute above solution in the 1st equation to find x;
x + y = 23
x + 9 = 23
x = 23 - 9
x = 14
