Two Step-Equations

Two Step Equations

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How to Solve

• Get rid of the 3rd Wheel: Add or Subtract to get rid of the number

• Break up the happy couple: Multiply or Divide both sides of the equation by the coefficient

Poll

What is the first step in solving two step equations?

• Break Up the Happy Couple: Multiply or Divide

• Get rid of the 3rd wheel: Add or Subtract

Multiple Choice

What is the first step in this equation?

3x + 5 = 20

• Add 5 and 20

• Subtract 5 from both sides of the equation

• Add 3 and 5

• Multiply 3 by 5

Multiple Choice

After you subtract 5 from both sides of the equation (3x + 5 = 20) what will the equation look like?

• 3x = 25

• 3x = 20

• 3x = 3

• 3x = 15

Multiple Choice

What is the next step in the equation?

3x = 15

• Divide both sides by 3

• Add 3 and 15

• Subtract 3 and 15

• Multiply 3 and 15

Multiple Choice

What is the final answer?

• 45

• 18

• 5

• 12

Solving Two- Step Equations

Multiple Select

Which two operations are in this equation?

$$5x+4=-16$$  

• addition

• subtraction

• multiplication

• division

Step One

The first step is to UNDO the addition or subtraction using inverse operations

Multiple Choice

Which equation shows the results of undoing the addition in the equation?

$$5x+4=-16$$  

• $$5x\ =\ 12$$  

• $$5x\ =\ -20$$  

• $$4x\ =\ 11$$  

• $$4x\ =\ -21$$  

Step Two

The second step is to UNDO the multiplication or division using inverse operations

Multiple Choice

Which equation shows the results of undoing the multiplication in the equation?  

$$5x=-20$$  

• $$x=4$$  

• $$x=25$$  

• $$x=-15$$  

• $$x=-4$$  

Multiple Choice

What is the first step to solve this equation:

11 - 3x = 44

• Add 3 to both sides

• Subtract 11 from both sides

• Add 11 to both sides

• Divide 3 on both sides.

Multiple Choice

What is the first step to solve this equation?

3k + 5 = 23

• Multiply both sides by 3

• Subtract both sides by 3

• Divide both sides by 3

• Subtract both sides by 5

Multiple Choice

What is the second step to solve this equation?

3k + 5 = 23

• Multiply both sides by 3

• Subtract both sides by 3

• Divide both sides by 3

• Subtract both sides by 5

Multiple Choice

The steps in solving 5b - 6 = 24 are:

• Add 6 to both sides and divide both sides by 5

• Add 6 to both sides and multiply both sides by 5

• Subtract 6 from both sides then multiply both sides by 5

• Subtract 6 from both sides then divide both sides by 5