Question

How do you solve `3x +2y = 6` and `x + 4y = -8`?

Answer 1

(x,y)=(4-3)

Explanation:

Subtract 3 times the second equation from the first:
`3x+2y-3(x+4y)=6-3(-8)`

=>

`-10y=30=>y=-3`

Plug this value into the first equation to get:
`3x+2y=3x-6=6=>x=4`