Answer:
x = - 1 , y = - 2
Explanation:
given the system of equations
- 4x + 3y = - 2 → (1)
4x - 4y = 4 → (2)
adding the equations term by term will eliminate x
(- 4x + 4x) + (3y - 4y) = - 2 + 4
0 - y = 2
- y = 2 ( multiply both sides by - 1 )
y = - 2
substitute y = - 2 into either of the 2 equations and solve for x
substituting into (2)
4x - 4(- 2) = 4
4x + 8 = 4 ( subtract 8 from both sides )
4x = - 4 ( divide both sides by 4 )
x = - 1
The solution is x = - 1 , y = - 2