### Home > MC2 > Chapter 7 > Lesson 7.1.1 > Problem 7-9

7-9.

Solve the equations below for the variable. Be sure to check your answer.** **

Distribute.

Combine like terms.

Subtract

Add

Divide each term by

Substitute 1 back into the original equation to check your answer.

When you simplify this expression, do you get the same values on each side?