# Inequality

## Inequality

Mathematical statement that contains one or more variables and a relation of inequality.

### Symbols

The symbols for the relation of inequality are :

• “<” which is read as “is less than”
• “>” which is read as “is greater than”
• “≤” which is read as “is less than or equal to”
• “≥” which is read as “is greater than or equal to”

### Examples

• In $$\mathbb{N}$$, the solution set of the inequality $$x + 5 > 12$$ is : {8, 9, 10, 11, 12, 13, …}.
• In $$\mathbb{R}$$, the solution set of the inequality $$15 + 7 ≥ x$$ is : ]–∞, 22].