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Stay and do a math problem. You should add 6, it subtracts 6, and the result is 6. Do you know what the correct result is?
Let this number be x.

The correct answer is X+6?

X-6=6?

x= 12?

x+6= 12+6= 18

Solve the equation and write the inspection process:

1. Substitute the unknown value into the original equation.

2. What's on the left? Is it right?

3. Judge whether the unknown value is the solution of the equation.

For example: 4.6x=23

Solution: x=23÷4.6

x=5

Check:

Substituting x = 5 into the equation, we get:

Left =4.6×5

=23= Right

So x=5 is the solution of the original equation.