1, find out the unknown and constant terms, and simplify the complex.

2. The unknown term is not equal to the left, and the constant term moves to the right.

3. Addition, subtraction, multiplication and division on both sides of the unequal sign.

4. Divide the coefficients of the unknowns on both sides of the inequality sign, and pay attention to the sign change.

5. Generally, pure greater than sign ">" and less than sign "are used.

Algebraic expression inequality:

Algebraic expression inequality has algebraic expressions on both sides.

One-dimensional linear inequality: an unknown (that is, one dimension) and the degree of the unknown is 1 (that is, once). Such as 3-x >0.

Similarly, binary linear inequality: an inequality that contains two unknowns (namely binary) and the number of unknowns is 1 (namely once).