Expressions vs Equations and Parts of Equations

Select all equations that match this balanced hanger.

What is the variable in this expression? 3x=21

• 3

• x

• 21

What equation is represented in this tape diagram?

• x+3=9

• 9x=3

• 3x=9

• 9+3=x

Which equation is represented in this tape diagram?

• x+5=35

• 35x=5

• 5x=35

• 35-x=x

Select all equations that are represented in this diagram.

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4a + 7b = 28

• Expression

• Equation

3x − 5y

• Expression

• Equation

p² + 3p = 10

• Expression

• Equation

7m = 4n

• Expression

• Equation

5q² + 2 = 0

• Expression

• Equation