Question

How do solve the following linear system?: `x= y - 11 , x - 3y = 1`?

Answer 1

`x=-17` and `y=-6`

Explanation:

`x=y-11`
`implies y-x=11` `.....................(i)`
`x-3y=1` `.......................(ii)`

By adding `(i)` and `(ii)`, we have
`-2y=12`
`implies y=-6`
Put `y=-6` in `(ii)`
`implies x-3(-6)=1`
`implies x+18=1`
`implies x=-17`