## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Start with a normal equation, which has a given solution. For instance: $$x+3=2 \\ x=-1$$ Then, divide both sides by an expression that makes the solution cause the denominator to be zero, as follows: $$\frac{x+3}{x+1}=\frac{2}{x+1}$$ The solution to this equation would be -1, but since this makes the denominator zero, there is no solution.