### Home > CCAA8 > Chapter 3 Unit 4 > Lesson CCA: 3.1.2 > Problem 3-21

3-21.

Simplify and solve each equation below for . Record your work.

Use the CPM algebra tiles application.

Add

to both sides.

Divide both sides by

.

Combine like terms.

Move

to one side by subtractingfrom both sides.Isolate

by addingto both sides.

Refer to parts (a) and (b).

Remember to check your work.

Refer to parts (a) and (b).

Remember to check your work.