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The format of calculating problems and solving equations in junior middle school mathematics
Let me give you a simple example. Look at its format.

1.( 12a+32b)÷2=

Solution: (12a+32b+28a)÷2 (copy the original text or write the original formula =)

=(40a+32b)÷2 (There must be a process)

=20a+ 16b

2. Solve the equation 5X+3=7x.

Solution:

5x+3=7x (copy the original)

3=7x-5x (there must be a step)

X= 1.2 (solution)

If there is no solution or root, it must be explained.

If it is a fractional equation, it needs to be tested.

Say X= has been tested. . . Is the solution of the original equation.

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