👉 Auxiliary in mathematics refers to a term used in algebra and number theory, specifically within the context of solving systems of linear equations. It is often defined as a solution method that allows one to find an equation's roots by using the coefficients of the variables to form a system of linear equations with unknowns on each side. The idea behind this approach is to eliminate one variable from the equation and then solve for the other, which would give us the values of all the other variables. In simpler terms