Only those with single- step equation experience dare proceed! Section 6.4.

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Presentation transcript:

Only those with single- step equation experience dare proceed! Section 6.4

To find the solution to an equation, we ________ the variable by mathematically undoing the equation. Check this out! →

There are four types of two-step equations: Multiplication/Addition Multiplication/SubtractionDivision/Subtraction Division/Addition What type of an equation is this?

Name the following equations. ______________ ___________________ __________________ _________________

How does naming equations help you solve them?

Let’s start with this equation: Step 1: Name the equation. __________________ Step 2: Name the inverse. _________________ Continued →

Step 3: Undo the addition part first (with subtraction) Step 4: Undo multiplication part next (with division)

Let’s try another one: Step 1: Name the equation. ____________________ Step 2: Name the inverse. ____________________ Continued →

Step 3: Undo the subtraction part first (with addition) Step 4: Undo the division part next (with multiplication)

Solve the following equations. Be sure to include the variable with your answer.

The perimeter of a rectangle is 54 inches. Its length is 22 inches. Write and solve an equation to determine its width? Perimeter = 54 inches width width 22 in 2 times the width + 2 times the length = perimeter Start by defining a variable!

Katie wants to buy a motor scooter that costs $518. She has already saved $188 and will earn $22 each week from babysitting jobs. Write and solve an equation to see how many weeks it will take Katie to save enough money to buy the motor scooter. amount saved each week + amount already saved = total cost Define a variable!

Ashley spent half of her weekly allowance at the movies. To earn extra money, her parents let her clean the house windows for $8. What is Ashley’s weekly allowance if she ended up with $14? amount of allowance spent at the movies + amount earned washing windows = ending amount of money Define a variable!