Answer:
(1, - 2 )
Explanation:
Given the 2 equations
10x + 6y = - 2 → (1)
2x + 6y = - 10 → (2)
Multiplying (2) by - 1 and adding to (1) will eliminate the y- term
- 2x - 6y = 10 → (3)
Add (1) and (3) term by term
(10x - 2x) + (6y - 6y) = (- 2 + 10), that is
8x = 8 ( divide both sides by 8 )
x = 1
Substitute x = 1 into either of the 2 equations.
Substituting x = 1 into (1)
10(1) + 6y = - 2
10 + 6y = - 2 ( subtract 10 from both sides )
6y = - 12 ( divide both sides by 6 )
y = - 2
Solution is (1, - 2 )