### Home > CC1 > Chapter 3 > Lesson 3.1.6 > Problem 3-87

3-87.

If you walk forward

Walk up

steps. Walking down steps is the opposite of walking up steps.

Earn

dollars. To undo earning money, you need to spend money.

It gets

degrees warmer. It gets

degrees colder. Lose

dollars. If you lose money, you need to find or earn the same amount to get back where you started.

Travel south

kilometers. Travel north

kilometers. Run backward

steps. Run forward

steps.