Question

How do you solve the system `2x+7=-5y` and `4y-16=x`?

Answer 1

`x=-108/13`
`y=25/13`

Explanation:

I would substitute the second equation into the first for `x`:
`2(4y-16)+7=-5y`
`8y-32+7=-5y`
`13y=25`
`y=25/13`
Use this value back in the first equation:
`2x+7=-5(25/13)`
`x=-108/13`