Chapter 3 Review

3.1 Combining like Terms

100

4h - 8h

-4h

200

z + 8 - 4z

-3z + 8 

300

6r - 7 - 2r

4r - 7

400

6y + 9 + 3y -7

9y + 2

500

3 (2 + q) + 15

21 + 3q

3.2 Adding/subtracting expressions

100

(5z + 4) + (3z + 6)

8z + 10

200

( c - 4 ) + ( 3c + 9 )

4c + 5

300

2( x + 9) + 3 (x - 2)

5x + 12

400

(c - 4) - (4c - 6) 

-3c + 2

500

2 ( 5f - 6) - 3 (f +2)

7f - 24

3.3 One step Adding/subtracting

100

x + 6 = -3

x = -9

200

x - 5 = 3

 x = 8

300

p - 3 = -4

p = -1

400

b - 19 = -11

b = 8

500

v + 3/4 = 1/4

v = -2/4 or -1/2

3.4 One step Multiplying/Dividing

100

x/5 = -7

x = -35

200

- 10 = 2y

y = -5

300

- 7 = y/7

y = -49

400

4x = -8

x = -2

500

w/-20 = -2.5

w = 50

3.5 Two step equations

100

-2c + 6 = -8

c = 7

200

-6y + 7 = -5

y = 2

300

(x/3) - 5 = -7

x = -6

400

3(3w - 4) = -21

(distribute first)

w = -1

500

-2( 2y - 5 ) = -6

y= -4