Question

-4x-2y=-124x+8y=-24How do I solve each system by elimination?

Answer 1

Given:

`\begin{gathered} -4x-2y=-12\ldots.(1) \\ 4x+8y=-24\ldots\text{ (2)} \end{gathered}`

Add equation (1) and (2)

`-4x-2y+4x+8y=-12-24`

`6y=-36`
`y=-6`

Substitute y=-6 in (2)

`4x+8(-6)=-24`
`4x-48=-24`
`4x=48-24`
`x=6`