2. Remove the brackets (if any); x+ 1 & gt； 15x+ 18

3. Move the project (pay attention to the sign change); x- 15x & gt； 18- 1

4. Merge similar terms (such as equations); - 14x & gt； 17

5. The coefficient becomes 1 (note "

There are some things I hope you can use:

1:

Using column inequalities to solve practical problems is a new hot topic in the proposition of senior high school entrance examination. Realistic problems are closely related to our lives, especially the problems of resources and environment. The key to solve this kind of problems is to find out the relationship between equality and inequality in practical problems and list them. Now give an example to illustrate the solution to this kind of problem.

2:

1. The main types of inequalities and inequality groups are multiple-choice questions, fill-in-the-blank questions, calculation questions and solution questions. 2. The knowledge points of inequality and inequality group content mainly include: the basic properties of inequality, the simple application of solving one-dimensional inequality and expressing the solution set of inequality on the number axis, solving two-dimensional inequality group and determining the solution set, inequality and inequality group with the number axis.

3:

1. The knowledge points examined in this part of equations and inequalities mainly include: listing equations according to the quantitative relationship in specific problems, solving and testing, estimating the solution of equations, solving linear equations of one yuan, linear equations of two yuan, fractional equations of linear equations of one yuan, quadratic equations of one yuan with one coefficient, the meaning and basic properties of inequalities, solving linear inequalities of one yuan and expressing the solution set on the number axis, and solving linear equations of one yuan.