Theory
An inequality compares two expressions using signs such as <, >, <=, or >=.
< means less than, > means greater than, <= means less than or equal to, and >= means greater than or equal to.
Solve inequalities using the same balancing steps as equations: do the same operation to both sides.
The important extra rule is this: if you multiply or divide both sides by a negative number, reverse the inequality sign.
If the answer is x < 6, then x can be any number less than 6, not just one value.
When asked for integer solutions, list only whole numbers that fit the final inequality. Check whether the endpoint is included.
Key ruleReverse the inequality sign when multiplying or dividing by a negative.