Question

-2x - 3y = -9

8x - y = -12

both solve for y​

Answer 1

see explanation

Explanation:

given

- 2x - 3y = - 9 ( add 2x to both sides )

- 2x + 2x - 3y = 2x - 9 ( simplify )

- 3y = 2x - 9 ( divide all terms by - 3 )

`(-3)/(-3)` y =
`(2)/(-3)` x -
`(9)/(-3)` , that is

y = -
`(2)/(3)` x + 3

----------------------------------

8x - y = - 12 ( subtract 8x from both sides )

8x - 8x - y = - 8x - 12 ( simplify )

- y = - 8x - 12 ( multiply through by - 1 )

y = 8x + 12