Given: - 7x < - 21. Choose the solution set. x - 3 x 3

First, simplify the inequality by getting the x term with a coefficient of 1.

Divide both sides by - 7. When you multiply or divide an equality by a negative number, you flip the inequality sign the opposite way.

-7x / - 7 < - 21 / - 7

x > 3

In set build notation is would look like this: x

Which would be read as "the set of all x, such that, x is greater than 3".