Answer:
(8, - 8 )
Step-by-step explanation:
Given the 2 equations
x = - y → (1)
8x + 3y = 40 → (2)
Substitute x = - y into (2)
8(- y) + 3y = 40, that is
- 8y + 3y = 40
- 5y = 40 ( divide both sides by - 5 )
y = - 8
Substitute y = - 8 into (1)
x = - (- 8) = 8
solution is (8, - 8 )
