Question

How do you solve the following linear system: `2x-y=-1, x+1/2y=-1/2`?

Answer 1

`Y=0`
`X=-1/2`

Explanation:

From the 2nd equation:`x=-1/2y -1/2`
We substitute it in the 1st equation:
`2(-1/2y-1/2)-y=-1`
`-y -1 -y =-1`
`-2y=0`
`Y=0` and so
`X=-1/2(0)-1/2`
`X=-1/2`