1. ALGEBRA READINESS LESSON 3-3 Warm Up Lesson 3-3 Warm Up

2. ALGEBRA READINESS LESSON 3-3 Warm Up Lesson 3-3 Warm Up

3. ALGEBRA READINESS “Solving Multiplication and Division Equations” (3-3) (3-1) What is the “Division Property of Equality”? Rule: Division Property of Equality: If you divide both sides of an Equality by the same number, both sides remain equal. If a = b, then a  c = b  c Example: If 10  2 = 5, then = = 1 1 = 1  10  2 5 55 55

4. ALGEBRA READINESS Solve 6x = 144. 6x = 144 1x = 24 Simplify. 6x 144 6 = Use the Division Property of Equality to get rid of the 6 and isolate the variable. Solving Multiplication and Division Equations LESSON 3-3 Additional Examples 1 1 x = 24 Identity Property of Multiplication.

5. ALGEBRA READINESS The cost of a pay-per-view concert on television is $39.95. Five friends decide to watch the concert together and split the cost equally. What amount will each friend pay? Draw a diagram to model the situation. $39.95 ccccc Let c = each person’s share of the cost of the concert. The equation 5c = 39.95 models this situation. Each friend’s share is $7.99. 5c = 39.95 Write the equation. c = Divide each side by 5 to undo the multiplication. 1c = 7.99 Simplify. Solving Multiplication and Division Equations LESSON 3-3 Additional Examples 5555 39.95 5 1 1

6. ALGEBRA READINESS “Solving Multiplication and Division Equations” (3-3) (3-1) What is the “Multiplication Property of Equality”? Rule: Multiplication Property of Equality: If you multiply both sides of an equality by the same number, both sides remain equal. If a = b, then ac = bc Example: If 3 10 = 30, then (3 10) 2 = 30 (2) 30 (2) = 60 60 = 60 

7. ALGEBRA READINESS Solve = 9. 1x = 54 Simplify. x6x6 Simplify. = 9 6 x6x6 () Solving Multiplication and Division Equations LESSON 3-3 Additional Examples 6161 6161 Use the Multiplication Property of Equality to get rid of the 6 and isolate the variable. = 9 x6x6 () 6161 1 1

8. ALGEBRA READINESS Solve each equation. 1.6x = 1562.y ÷ 11 = 15 3.3w = 13.54.z ÷ 2.7 = 9 26165 4.5 24.3 Solving Multiplication and Division Equations LESSON 3-3 Lesson Quiz