Question

How do you solve the system `3x + y = 4`, `-6x - 2y = 12`?

Answer 1

Since `-4 !=6`, then there is no solution

Explanation:

`3x+y=4` --- (1)
`-6x-2y=12` --- (2)

From (1)
`3x+y=4`
`y=4-3x` --- (3)

Sub (3) into (2)
`-6x-2y=12`
`-3x-y=6`
`-3x-(4-3x)=6`
`-3x-4+3x=6`
`-4=6`

Since `-4 !=6`, then there is no solution