Writing Equations with Variables

Select all equations that match this balanced hanger.

Select all equations that match this tape diagram.

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

• 3

• x

• 21

Select all equations that are represented in this diagram.

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What is the value of x in this tape diagram?

• 3x

• 9

• 3

• 1/3

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

Solve this equation

a - 2.1 = 5.8

• a = 7.9

• a = 3.7

• a = 5.8

• None of these match my answer

Please solve this equation

1.2x = 9.6

• x = 8

• x = 10.8

• x = 8.4

• None of these match my answer