Answer:
(- 10, 10 )
Explanation:
6x + 5y = - 10 ( subtract 6x from both sides )
5y = - 10 - 6x → (1)
3x + 5y = 20 → (2)
substitute 5y = - 10 - 6x into (2)
3x - 10 - 6x = 20
- 3x - 10 = 20 ( add 10 to both sides )
- 3x = 30 ( divide both sides by - 3 )
x = - 10
substitute x = - 10 into (2) and solve for y
3(- 10) + 5y = 20
- 30 + 5y = 20 ( add 30 to both sides )
5y = 50 ( divide both sides by 5 )
y = 10
solution is (- 10, 10 )