Two-Step Equations Review

Two-Step Equations Review

Our Goal

• Isolate the variable on one side of the equal sign

Multiple Choice

What does isolate the variable mean?

• Get the variable alone

• Get rid of the variable

Our Strategy

• Keep it balanced

• What you do on one side, you do on the other

• "Copy and paste"

Use Inverse Operations to isolate the variable

• Inverse of addition - subtraction

• Inverse of subtraction - addition

• Inverse of multiplication - division

• Inverse of division - multiplication

Multiple Choice

What is the inverse of multiplication?

• Addition

• Subtraction

• Multiplication

• Division

3x - 6 = 12

• Add 6 to both sides: 3x = 18

• Divide both sides by 3: x = 6

• Check 3 (6) - 6 = 18

Multiple Choice

12g - 5 = 19

What is the correct first step?

• add 12 to both sides

• add 19 to both sides

• add 5 to both sides

Multiple Choice

12g = 24

What is the next step?

• multiply both sides by 12

• multiply both sides by 24

• divide both sides by 12

• divide both sides by 24

Multiple Choice

12g = 24

What is the final answer?

• g = 2

• g = 12

• g = 36

Multiple Choice

2t - 7 = 3

Find the value of t

• -2

• 5

• 2

• 20

Multiple Choice

15f + 10 = 55

What is the value of f?

• 1

• 2

• 3

• 4

Multiple Choice

Nick opens a savings account with $50. Each week after, he deposits $15. In how many weeks will he have saved $500?

Choose the correct equation to represent this problem.

• 15 + 50 = 500d

• 15d + 50 = 500

• 15 + 50d = 500

Multiple Choice

15d + 50 = 500

Solve for d.

• 3

• 15

• 30

• 45

Multiple Choice

Alex rents a car for one day. The charge is $18 plus $2 per gallon of gas used. Alex wants to spend exactly $30. How many gallons can he use?

Chose the correct equation to represent this problem.

• 2 + 18 = 30g

• 2 + 18g = 30

• 2g + 18 = 30

Multiple Choice

2g + 18 = 30

Solve for g.

• 10

• 6

• 12

Time to SHOW what you KNOW!

• The quiz for today is on Formative

• To get there...

• Try the link in the chat first.

• If that doesn't work...

• Go to M.Broome's page on Clever

• Click on the link for Formative

• The name of the quiz is "Term 4 Week 4 Quiz"