Review your work on the Self Check problem and think about the following questions.
- What can you do to both sides of the equation to get x by itself on one side?
- What property of equality can you use to solve the equation?
- Substitute your solution back into the original equation. Do you get a true equation?
- Can you think of a real-world situation about the height of something, the cost of something, or earning money?
- Can you think of a proportional situation for the last equation?