Question

How do you solve the system using the elimination method for -2x + y + 6 = 0 and 2x + y – 8 = 0?

Answer 1

I found:
`x=7/2`
`y=1`

Explanation:

You can add directly the two equations to eliminate `x`:

`{-2x+y+6=0`
`{2x+y-8=0` add them:

`0+2y-2=0`
so:
`y=2/2=1`

substitute this value back into the first equation:

`-2x+1+6=0`
`x=7/2`