What is inequalities

In mathematics, an inequality is a relation that holds between two values when they are different

Solving linear inequalities is very similar to solving linear equations, except for one small but important detail: you flip the inequality sign whenever you multiply or divide the inequality by a negative

Symbols used in inequalities

The symbol < means less than. The symbol > means greater than.

The symbol < with a bar underneath means less than or equal to. Usually this is written as ?
The symbol > with a bar underneath means greater than or equal to. Usually this is written as ?

The symbol ? means the quatities on left and right side are not equal