Answer:
(- 2, - 7 )
Explanation:
x + 3y = - 23 → (1)
- x + 4y = - 26 → (2)
add (1) and (2) term by term to eliminate x
(x - x) + (3y + 4y) = - 23 - 26
0 + 7y = - 49
7y = - 49 ( divide both sides by 7 )
y = - 7
substitute y = - 7 into either of the 2 equations and solve for x
substituting into (1)
x + 3(- 7) = - 23
x - 21 = - 23 ( add 21 to both sides )
x = - 2
solution is (- 2, - 7 )