Solution of linear equation of one variable: removing brackets, shifting terms, merging similar terms and normalizing coefficients. Remove brackets: Remove brackets from the equation. Shift term: first put a term with unknown quantity on one side of the equation and a constant on the other side of the equation, so it becomes the form of x=a (constant). Merge similar terms: simplify multiple unknown terms X into one term and multiple constants A into one term. Coefficient 1: transform the equation into the form of x = a.

Mathematical equation refers to a set of equations or inequalities containing an unknown X. The types of equations are divided according to the different numbers of unknowns, the different powers of unknowns and the different numbers and powers of unknowns.

Classification is divided into univariate equation, bivariate equation and multivariate equation according to the number of unknowns;

According to the power of the unknown, it can be divided into linear equation, quadratic equation and multivariate equation.

According to the number and power of the unknown, it can be divided into binary linear equation, binary quadratic equation, binary multivariate equation and multivariate multivariate equation.