review!!

two-step equations(addition & subtraction)

100

5x + 2 = 67

pg 167 (a)

x = 13

200

8z - 2 = -98

pg 167 (d)

z = -12

300

-8 + 3x + 5 = 12

pg 172 (a)

x= 5

400

20 - 3y = 65 

pg 173 (a)

y= -15

500

you bought 6 identical skirts from a boutique. There was a $12 discount on your purchase, and your total bill was only $46.80. What is the normal price of one skirt? 

pg 175 (b)

$9.80

two-step equation(multiplication & division)

100

x + 6 / 5 = 14

pg 168 (a)

64

200

x- 4 / 12 = -3 

pg 168 (b)

-32

300

2x/5 = 8

pg 171 (a)

20

400

15= -3x/10 

pg 171 (c)

-50

500

two- fifths of a number is 466. What is the number 

pg 175 (C)

1,165

a variable on both sides

100

3x + 2 = 2x - 7

pg 180 (a)

x= -9

200

9y - 2 = 7y +5 

pg 180 (b)

y = 7/2 or 3 1/2

300

11-2q = 7- 5q

pg 181 (a)

-4/3

400

8x - 12 + -1 - 3x

pg 181 (c)

1

500

8-2m+5m-8m = 20- m + 5m - 2m

pg 185 (c)

m= -12/7 or -1 5/7

simplify

100

6 + 2x - 3x - 7 +11 

pg 182 (a)

-x + 10

200

-s -12 + 15s +9 - 7s

pg 182 (b)

7s-3

300

5x-8-7x+1

pg 183 (a)

-2x - 7

400

-8 + 7c _ 11c +8 -c 

pg 183 (c)

-5c

500

8x + 2 + BLANK = 5x+ 8

pg 183 (a)

(-3x) + 6

miscellaneous

100

A letter used to represent an unknown number

variable

200

The four basic operations

addition, subtraction, multiplication, and division

300

A number right in front of a variable

coefficient

400

addition / subtraction  

like signs BLANK and BLANK

unlike sign BLANK and BLANK

add them, take the sign with you

subtract, take the sign of the larger number

500

multiplication/ division 

Like signs BLANK

Unlike signs BLANK

Positive 

negative