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Home > CC1 > Chapter 4 > Lesson 4.1.2 > Problem 4-20

4-20.

Each expression below begins with –5 and then adds something to it. As you look at each expression, state which direction you should move on a number line if you start at –5. Then simplify each expression.

For example, if the expression reads , you would write “left, –14,” since from –5 you would move left on a number line 9 units and would end up at –14. Homework Help ✎

a.

b.

See the hint for part (a).

Left, −13.

c.

Which direction should you move to add