Chapter 4, Lesson 3


4-3.A subtract signed numbers
Evaluate each expression.
a. —21 — 4 b. —16 — (—7)
c. d. 12 — 2(3 —5)

4-3.B understand the Subtraction Property of Equality
For which of the following equations does the solution involve the Subtraction Property of Equality?
I) x —4 = 7
II) 7y—3 = 18
III) 11 = 2z + 9
(a) I and II only (b) II and III only
(c) III only (d) I, II, and III

4-3.C write an inequality for a number-line graph
Which inequality represents the graph shown?

(a) x < —2 (b) x ? —2
(c) x >—2 (d) x ? —2