Differentiating Expressions and Equations in Algebra

Expressions have an equal sign, equations do not.

Equations can change values, expressions cannot.

Equations have an equal sign, expressions do not.

Expressions are full math sentences, equations are not.

A full math sentence with a variable that cannot change.

A full math sentence with an equal sign.

A math phrase that is part of a full sentence.

A math phrase with a defined variable value.

12

7

5

2

23

60

20

3

R = 15

9 + N = 11

5R = 75

7 + x

They are part of a math phrase.

The variable can have multiple values.

They do not have an equal sign.

They are the full math sentence.

9

5

2

11

20

5

75

15

They can change values.

They have a defined or set value.

They are part of a math phrase.

They do not have an equal sign.

R = 15

R = 12

R = 45

R = 3