- #1

flyingpig

- 2,579

- 1

## Homework Statement

Find all x in

|5x-2| = 6x-12

## The Attempt at a Solution

http://www.wolframalpha.com/input/?i=Plot[|5x-2|+%3D+6x-12%2C{x%2C-1.5%2C1.5}]

Notice how only x = 10 is a solution?

So my question is, why isn't x = -14/11 a solution? I mean sure they don't intersect on the graph, but is there anyway of inspection on the equation to know that x = -14/11 is not a solution?