1. Lesson 2­2.notebook September 05, 2013
Assignment:
1­­>L2.2, pg. 86 ­ 87, #18 ­ 60 (thirds) ­ Due Tomorrow (9/6)

2. Lesson 2­2.notebook September 05, 2013
Lesson 2.2 WarmUp:
pg. 77­78
4)
8)
26)
28)
29)

3. Lesson 2­2.notebook September 05, 2013
Lesson 2.2:
*Addition Property of Equality ­ for any real numbers a, b, and c,
if a = b, then a + c = b + c
*Subtraction Property of Equality ­ for any real numbers a, b, and c, if a
= b, then a ­ c = b ­ c
*Multiplication Property of Equality ­ for any real numbers a, b, and c, if
a = b, then ac = bc
*Division Property of Equality ­ for any real numbers a, b, and c,
if a = b, then a/c = b/c

4. Lesson 2­2.notebook September 05, 2013
*FYI...to solve equations..."ISOLATE THE VARIABLE".
...AND..."what we do to one side of the equation...we must do to the
other" [to keep them equal]
*Also...dividing by a fraction really means....
...multiplying by its "reciprocal"!

5. Lesson 2­2.notebook September 05, 2013
Lesson 2.2 examples:
Solve each equation. Check your answer.
A) 104 = y ­ 67 Check:
B) 2 n = 10 Check:
3

6. Lesson 2­2.notebook September 05, 2013
C) ­61 = d + (­18) Check:
D) ­16 ­ (­t) = ­45 Check:

7. Lesson 2­2.notebook September 05, 2013
E) 4 1/5 = 3p Check:
F) 2 z Check:
5 45