Show:
Substitution
Like Terms
Distribution
Factoring
Vocabulary
100

evaluate if x=5 

x+1

6

100
2x + 3x
5x
100

4 (x + z)

4x + 4z 

100
6r + 12
6 (r + 2)
100

Replacing one symbol with a number or a variable.

Substitution

200

evaluate if x=10 

2x+3

23

200
-12b + -7b
-19b
200
6 (2 + b)
12 + 6b
200
35z + 7
7 (5z + 1)
200

An unknown value.

Variable

300

evaluate if x=2.5 

4x

10

300

-2x + 3r + 5x

3x + 3r

300
7 (-5 + 2r)
-35 + 14r
300
88 - 8x
8 (11 - x)
300

A combination of numbers and variables separated by operation signs. Ex: 2x+3

Expression

400

evaluate if x=2 and y=3 

x+2y

8

400

-6x + 77b + -48x + -8b 

-54x + 69b

400
-11 (-4 + -2r)
44 + 22r
400
-12 + -4x 
4 (-3 + -x)
400

Two expressions that have the same value.

Equivalent expressions

500

evaluate if x=5 and y=12 

3(x+y)

51

500

2x2 + r +6x2

8x2 + r

500
-12 (14 - 7r) 
-168r - 84r
500
-96 - 24b
24 ( -4 - b)
500

A statement of equality between two expressions.

Equation