$\"\"$

The inequality is $\"\"$ .

Solve the inequality.

$\"\"$ (Original inequality)

$\"\"$ (Divide each side by $\"\"$ )

$\"\"$ (Cancel common terms)

The graph of the solution set on a number line diagram.

$\"Graph$

A circle means that this point is not included in the solution set.

$\"\"$

Check solution for $\"\"$ -value.

Case(i): $\"\"$

$\"\"$ (Original inequality)

$\"\"$ (Substitute $\"\"$ )

$\"\"$ (Multiply)

Therefore, $\"\"$ is true inequality.

Case(ii): $\"\"$

$\"\"$ (Original inequality)

$\"\"$ (Substitute $\"\"$ )

$\"\"$ (Multiply)

Therefore, $\"\"$ is false inequality.

$\"\"$

The solution set of the inequality is $\"\"$ .