This paper will introduce the knowledge of solving equations in junior high school mathematics to help you master the methods of solving equations better.

Fundamentals of solving equations

Solving equations is a basic operation in mathematics. Through the deformation of both sides of the equation, the value of the unknown quantity is obtained.

Step of solving equation

The steps to solve the equation include: removing brackets, merging similar terms, moving terms, simplifying and solving.

Examples of solving equations

For example: 20 = 5+3× 5; 30=5+5×5; 40= 19+3×7 or 40 = 7+3×11; a+3a = 4a； 6x+6x = 12x； 6 b- 1.5b = 4.5b； 4m+4m-m = 7m； 8a-6a+2a = 4a； 7x+2x-x=8x .

Equation solving skills

The skills of solving equations include: paying attention to symbols, denominators, molecules, coefficients and variables.

Application of solving equations

Solving equations is widely used in real life, such as computer programming, physics, chemistry and other fields.