Answer:
(- 2, - 4 )
Explanation:
4x - 3y = = 4 → (1)
3x + 3y = - 18 → (2)
adding the equations term by term will eliminate y
(4x + 3x) + (- 3y + 3y) = 4 - 18
7x + 0 = - 14
7x = - 14 ( divide both sides by 7 )
x = - 2
substitute x = - 2 into either of the 2 equations and solve for y
substituting into (2)
3(- 2) + 3y = - 18
- 6 + 3y = - 18 ( add 6 to both sides )
3y = - 12 ( divide both sides by 3 )
y = - 4
solution is (- 2, - 4 )