Models to Solve One-Step Equations

x - 10 = 20

• x = 20/10

• x = 20

• x = 10

• x = 30

6 y = 42

• y = 7

• y = 6

• y = 36

• y = 48

y/3 = 8

• y = 3/8

• y = 8/3

• y = 24

• y = 83

1/2 n = 10

• n = 10

• n = 5

• n = 20

• n = 12

Which choice describes the step needed to isolate the variable? (Tap outside of the gray box to see the equation.)

• Divide both sides by 11

• Multiply both sides by 11.

• Add 11 to both sides.

• Subtract 11 to both sides.

y - 4.6 = 12

• 16.6

• 5.8

• 7.4

• Answer not Given

Solve for x:

• x = 20

• x = 7

• x = 10

• x = 3

Which equation has x = 5 as the solution?

• x + 15 = 10

• 2x = 5

• 2x = 10

Solve the equation
3x = 27. 

• x = 24

• x = 81

• x = 9

Solve for x:

• x = 20

• x = 7

• x = 10

• x = 3