Question

How do you solve `4x-3y=8` and `2x+5y=-9`?

Answer 1

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

Explanation:

I would multiply the second equation by `-2` to get:
`{4x-3y=8`
`{color(red)(-4x-10y=18` add them together:
`0-13y=26`
so `y=26/-13=-2`
substitute back into the first equation:

`4x-3(-2)=8`
`4x=2`
`x=2/4=1/2`