Two Step Equations

Solving Two Step Equations

Solving Two-Step Equations

Learning Objective

I can solve two-step equations in one variable.

To solve, always do the opposite!

If you see addition... you need to subtract!

To solve, always do the opposite!

If you see subtraction... you need to add!

To solve, always do the opposite!

If you see multiplication, you need to divide!

To solve, always do the opposite!

If you see division, you need to multiply!

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

Multiple Choice

The goal of solving two-step equations is to:

• francine

• Find the coefficient

• Find the value of the variable

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

Open Ended

Take out scrap paper and solve: 4x + 6 = 18

Open Ended

Take out scrap paper and solve: 5x + 3 = 23

Open Ended

Take out scrap paper and solve: 6x - 5 = 13

Open Ended

Take out scrap paper and solve: 7x - 4 = 24

Open Ended

Take out scrap paper and solve: 9k - 8 = 10