Keeping Equations True

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

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

• 3

• x

• 21

Solve the Equation

Z + 6 = 10

• 4

• -4

• 6

• -6

Solve the Equation

s + 1 = 3

• -2

• 2

• 1

• -1

Solve the Equation

m - 4 = 11

• 13

• 15

• 18

• 20

Solve the Equation

q - 12 = 1

• 11

• 12

• 13

• 14

Solve the Equation

t - 19 = 2

• 17

• 18

• 21

• 26

Solve the Equation

8y = 48

• 4

• -4

• 6

• -6