$\"\"$

Let x be an variable.

Find the point that is the same distance from $\"\"$ 9 and 3 i.e. mid point between $\"\"$ 9 and 3.

Mid point "M" = $\"\"$

Mid point between $\"\"$ 9 and 3 is $\"\"$ .

The distance from $\"\"$ 9 to $\"\"$ is 6 units.

The distance from $\"\"$ to 3 is 6 units.

So the equation is $\"\"$ .

$\"\"$ (product of two same signs is positive) $\"\"$

The equation is $\"\"$ .