Question

How do you solve `3x + y = 6` and `-x - 1/3y = -2`?

Answer 1

There are infinitely many solutions of the form `(x,6-3x), AAx inRR`

Explanation:

Given
[1]`color(white)("XXX")3x+y=6`
and
[2]`color(white)("XXX")-x-1/3y=-2`

Note that [1] is simply [2] multiplied by `(-3)`
so these equations represent the same line.