Question

How do you solve `x=-3y-14` and `x=y-3` using substitution?

Answer 1

`x = 6.75`
`y = -2.25`

Explanation:

Apply the substitution method:

`x = -3y-12`
`x = y -3`

`-3y - 12 = y -3`

Simplify

`-4y = 9`

`y = -9/4 = -2.25`

So

`x = -3y - 12`

`x = -3(-9/4) - 12`

`x = 6.75`