Question

How do you solve the following system?: `-x -5y =3, x -16y = -42`

Answer 1

`y = 13/7 , x = - 86/7`

Explanation:

Adding the equations eliminates ' x '
`-21 y = - 39 => y = 13/7`
Substituting back
`x = - 5y - 3 = - 5 (13/7) - (21/7) = - 86/7`