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Miscellaneous
Simplifying Expressions
One Step Equations
Two Step Equations
Multi-Step Equations
100
A letter used to represent an unknown number
What is a variable?
100

4x + 2x + 20x + x

-17x

100

x/1.5=16

x=24

100

18=5m+3

m=3

100

2x+x+12=78

x=22

200
The opposite of addition
What is subtraction?
200

(1/4)m + 8 + (1/4)m + n - 4n

(1/2)m - 3n + 8

200

m + 10 = 3.5

m=-6.5

200

(1/2)b - 2 = 6

b=16

200

17n-23n+11.5n=44

n=8

300

What are the four basic operations?

Multiplication, Division, Subtraction, Addition
300

(1/2)b - 9 + 8b - 7 - b + 14

7.5b - 2

300

11=b/2

b=22

300

-14 = 9w + 8.5

w=-2.5

300

4+(1/4)x+3=10

x=12

400
A number right in front of a variable
What is a coefficient?
400

3.75x - 5 - 8.75x + 4.5 + 0.5

-5x

400

(13/5)r=351

r=135

400

-12 = -30n + 3

n=(1/2)

400

7x + -2x + 13 = 28

x=3

500

What is a number by itself?

Constant

500

-1.2k + 10.9 - g + 0.5g + 0.3k

-0.5g - 0.9k + 10.9

500

(4/3)y=16

y=12

500

(2/5)x + 10 = 30

x=50

500

2.3x - 3.9 + 1.2x - 4.6 = 2

x=3