1. One-dimensional linear equation: An integral equation with only one unknown number and a degree of 1 and a non-zero coefficient is a one-dimensional linear equation.

2. The standard form of one-dimensional linear equation: ax+b=0(x is unknown, a and b are known numbers, a≠0).

3. General steps for solving a linear equation with one variable: sorting out the equation ... removing the denominator ... dismantling the bracket ... changing the terminology ... merging similar terminology ... and converting the coefficient into 1 ... (testing the solution of the equation).

4. Set up a linear equation of one variable to solve application problems:

(1) reading analysis method: reading analysis method

Read the stem carefully, find out the key words that express the equal relationship, such as "big, small, many, few, yes, * * *, combination, For, completion, increase, decrease, match-",list the literal equations with these key words, and set the unknown number according to the meaning of the question. Finally, using the relationship between quantity and quantity in the question, fill in the algebraic expression and get the equations.

(2) Drawing analysis method

Analyzing mathematical problems with graphics is the embodiment of the combination of numbers and shapes in mathematics. Read the question carefully, and draw the relevant figures according to the meaning of the question, so that each part of the figure has a specific meaning. Finding the equation relationship through the graph is the key to solve the problem, so as to get the basis of concise equation. Finally, using the relationship between quantity and quantity (unknown quantity can be regarded as known quantity), filling in the relevant algebraic expression is the basis of getting the equation.