Write an absolute value equation that has the given solutions 3 and 9

The absolute value of the a certain number is the positive equivalent of the number.

Example,

The absolute value of 3, expressed as I3I is 3. Also,

the absolute value of - 3, expressed as I-3I is 3.

For this item, we have the equation,

Ix - 6I = 3

If we substitute 3 to x, we have,

I3 - 6I = I-3I = 3

Also, if we substitute 9 to the equation,

I9 - 6I = I3I = 3

Thus, we can have the equation as given above,

Ix - 6I = 3

as the answer.

It is to be noted that there are still other equations that can be used as answer to this item.