Think more, ask more questions, do more questions, and do them in several ways to exercise the flexibility of the brain. These points can basically be learned well.

The 1. equation refers to an equation containing unknowns. It is an equation that represents the equal relationship between two mathematical expressions (such as two numbers, functions, quantities and operations), and the value of the unknown quantity that makes the equation hold is called "solution" or "root". The process of finding the solution of the equation is called "solving the equation".

Secondly, the difficulty of reverse thinking can be avoided by solving the equation, and the equation with the quantity to be solved can be listed directly. There are many forms of equations, such as one-dimensional linear equation, two-dimensional linear equation, one-dimensional quadratic equation and so on. , can also be combined into equations to solve multiple unknowns.

Third, the method of solving equations

1. Denominator removal: This is the first step to solve a linear equation. The linear equation with denominator must be named first, of course, this step can be omitted if there is no denominator in the equation.

2. Delete the brackets: after deleting the denominator, the brackets should be deleted. If there is a denominator, remove the denominator first and then remove the brackets. Of course, if there is no bracket, this step can be omitted.

3. Moving terminology: This is a very important step. Every unary linear equation has a step, that is, moving the same type of data to the same side, in other words, moving the number to one side of the equal sign and the unknown to the other side of the equal sign. We are used to moving the unknown to the left of the equal sign.

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4. Merging similar items: Merging similar items in polynomials into one item is called merging similar items. The coefficients of similar items are added together, and the results are taken as coefficients, and the index of letters remains unchanged. Solving the linear equation of one variable is a crucial step, and it is also a very important step. When merging similar items, we should follow the rules of merging similar items.

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5. In the last step, as long as the coefficient of the unknown quantity is changed to 1, the result is the solution of this one-dimensional linear equation, which is what we need to get at last.

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