(multiplication/ division) Today’s Lesson: What: One-step equations (multiplication/ division) Why: . . . so I can solve multiplication and division one-step equations .

How do you solve a multiplication one-step equation How do you solve a multiplication one-step equation? . . . a division one-step equation?

If 3 “x’s” are 15, then how much would one “x” be?? Modeling Multiplication equations: 1) 3x = 15 If 3 “x’s” are 15, then how much would one “x” be?? x = 5 2) 4x = 16 x = 4

5x = -55 5 5 x = -11 Multiplication equations: To solve a multiplication equation, we perform the __________________________ operation. In other words, we ________________________________ on both sides of the equation!!! inverse DIVIDE example: 5x = -55 5 5 x = -11 Find the # with “x.” This is the coefficient. Then, DIVIDE on both sides by that # !!

Guided examples: 3) -80 = -8x x = 10 4) - x = 75 x = -75

YOUR TURN: Divide on both sides! 5) - x = -12 x = 12 6) 90 = 3x x = 30

𝒙 𝟒 = -20 ( 𝟒 𝟏 ) 𝒙 𝟒 = -20 ( 𝟒 𝟏 ) x = -80 example: Division equations: To solve a division equation, we perform the _______________________________ operation. In other words, we ________________________________ on both sides of the equation!!! inverse MULTIPLY example: 𝒙 𝟒 = -20 ( 𝟒 𝟏 ) 𝒙 𝟒 = -20 ( 𝟒 𝟏 ) x = -80

Guided examples: 1) 𝑥 20 = 6 x = 120 2) -50 = 𝑥 −3 x = 150

3) 𝑥 15 = 2 4) -8 = 𝑥 −8 YOUR TURN: Multiply on both sides! x = 30 𝑥 15 = 2 x = 30 4) -8 = 𝑥 −8 x = 64

1) 2 3 x = 6 2) 4 5 x = -8 3) 3 4 x = 9 Equations with a fraction: YOUR TURN: 3) 3 4 x = 9 x = 12

Wrap-it-up/ summary: 1) How do you solve a multiplication one-step equation? . . . a division one-step equation?

Scene from “A Christmas Story” (for venn diagram question) . . .

END OF LESSON