two-step equations
(addition & subtraction)
(addition & subtraction)
5x + 2 = 67
pg 167 (a)
x = 13
x + 6 / 5 = 14
pg 168 (a)
64
3x + 2 = 2x - 7
pg 180 (a)
x= -9
6 + 2x - 3x - 7 +11
pg 182 (a)
-x + 10
A letter used to represent an unknown number
variable
8z - 2 = -98
pg 167 (d)
z = -12
x- 4 / 12 = -3
pg 168 (b)
-32
9y - 2 = 7y +5
pg 180 (b)
y = 7/2 or 3 1/2
-s -12 + 15s +9 - 7s
pg 182 (b)
7s-3
The four basic operations
addition, subtraction, multiplication, and division
-8 + 3x + 5 = 12
pg 172 (a)
x= 5
2x/5 = 8
pg 171 (a)
20
11-2q = 7- 5q
pg 181 (a)
-4/3
5x-8-7x+1
pg 183 (a)
-2x - 7
A number right in front of a variable
coefficient
20 - 3y = 65
pg 173 (a)
y= -15
15= -3x/10
pg 171 (c)
-50
8x - 12 + -1 - 3x
pg 181 (c)
1
-8 + 7c _ 11c +8 -c
pg 183 (c)
-5c
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
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- fifths of a number is 466. What is the number
pg 175 (C)
1,165
8-2m+5m-8m = 20- m + 5m - 2m
pg 185 (c)
m= -12/7 or -1 5/7
8x + 2 + BLANK = 5x+ 8
pg 183 (a)
(-3x) + 6
multiplication/ division
Like signs BLANK
Unlike signs BLANK
Positive
negative