Answer:
∴ x = 4.5, y = 5.5
Explanation:
x + y = 10 ------ equation (1)
x - y = -1 ------ equation (2)
Add equations (1) and (2):
(x + y) + (x - y) = 10 + (-1)
x + y + x - y = 10 - 1
2x = 9
∴ x = 4.5
Substitute x = 4.5 into equation (1):
4.5 + y = 10
∴ y = 5.5