Algebra Review

Fun with Equations

100

Solve: 2x + 2 = 18

x = 8

200

Solve: 3x + 4 = 7

x = 1

300

Solve: 3x + 3 - 2x = 21

x = 18

400

Solve: 4x - 5 - 3x + 2 - 2x = 9

x = -12

500

Solve: 21 = x - 12

x = 33

Simplify

100

simplify: 2x - 7 -3(x + 5)

-x - 22

200

Algebra: simplify: 3(2wd³ - 3) + wd³

Algebra: 7wd³ - 9 

300

Simplify: -4(3x - 2) -2(4 + 3x)

-18x

400

Simplify: a(b - c) - 2a(c + b)

-1ab - 3ac

500

Simplify: -(x + 7) -2(4x + y)

-9x -7 -2y

Vocabulary

100

the name for the unknown number that is represented with a letter

variable

200

the name for a number whose value will always remain the same (no variable)

constant

300

the number in front of a variable in a variable term

EX: 5x (what is the 5 called?)

coefficient

400

Numbers, symbols and operations (such as + and ×) grouped together that represent the value of something

expression

500

A mathematical expression that shows the value of the expression using an equal sign

equation

Variable Operations

100

2x + 5x = 

7x

200

2x - 5x

-3x

300

2x·5x

10x2

400

x3·x5

x8

500

(x3)4

x12

Equations and Expressions

100

Solve for x.

3x + 9 = 30

x = 7

200

True or False:

4(2x-3) = 8x - 12

True

300

Solve for x.

1/2 (x) - 5 = 6

 

x = 22

400

3x + 10 = 2x

x = -10

500

True or False: 2(3x+4) = 6x+6

False