The equation has infinite solutions.
Explanation:
1. When Ana solved the linear equation resulting in a variable expression set equal to the same variable expression, it means that the equation simplifies to something like x = x. This type of equation is known as an identity.
2. An identity equation like x = x is true for all real numbers of x. This means that no matter what value x takes, the equation remains true. Therefore, there are infinite solutions to this type of equation.
In conclusion, the best interpretation of this solution is that the equation has infinite solutions because it simplifies to an identity where x can take on any real number value.