Lesson 8: Solving multi-step equations

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Presentation transcript:

Lesson 8: Solving multi-step equations Texas Algebra I Instructor: Mrs. Young Lesson 8: Solving multi-step equations

Lesson Objectives: TEKS: A.2; A.3a Use inverse operations to solve multi-step equations Synthesize information from previous lessons to solve algebraic equations.

Quick Review Undo each other Inverse operations Combine like-terms Properties of equality Undo each other Terms with same variable and power Do same thing to both sides of equation

Result: Single-step Result: Multi-step

Getting dressed Shoes and socks Algebra P E M/D A/S Shoes and socks Algebra First, put on socks Then, put on shoes

Getting undressed: Shoes and socks Algebra like getting dressed…in reverse! P E M/D A/S Shoes and socks Algebra First, take off shoes If putting on shoes was subtracting 7, then Taking off shoes is add 7! Then, take off socks If putting on socks was multiply by 4, then taking off socks would be divide by 4!

Guided practice: ←take off shoes 2. take off socks ←take off shoes What are the “shoes” in this problem? 2. take off socks What are the “socks” in this problem?

Guided practice: 1. take off shoes ← take off socks 1. take off shoes What are the “shoes” in this problem? Adding 8, so subtract 8 to solve! ← take off socks What are the “socks” in this problem?

Guided practice: 1. take off shoes ← take off socks 1. take off shoes What are the “shoes” in this problem? Adding 8, so subtract 8 to solve! ← take off socks What are the “socks” in this problem? Multiplying by 9, so divide by 9 to solve!

Lesson Objectives: Review Use inverse operations to solve multi-step equations Synthesize information from previous lessons to solve algebraic equations.