### Home > INT1 > Chapter Ch11 > Lesson 11.1.2 > Problem 11-21

11-21.

Solve the following inequalities. Explain or justify your steps for part (a).

Solve as an equation to find the boundary point.

Check points in each region to determine which region is the solution.

Use the same method as part (a).

Distribute before solving.

Multiply the whole inequality by

to cancel out the fraction.