Warm – Up Using the “Combining Like Terms ½ sheet”, simplify questions 1-10 EVENS ONLY. 2. 18x 4. 18xy 6. 1.4r + 3 8. 18x + 4y 10. 25w + 3j + 31.

Slides:

Advertisements

Similar presentations

Objective: Students will be able to write and solve two- step equations with one variable!

Advertisements

Section 3.3 Solving Multi-Step Equations **More than one operation to isolate the variable**

© 2007 by S - Squared, Inc. All Rights Reserved.

Solving Equations Medina1 Variables on Both Sides.

Use the Distributive Property to: 1) simplify expressions 2) Solve equations.

Solving Linear Equations with a variable on only one side of the equation.

Solving Equations Medina1 Multi-Step Equations. Steps to solve Medina2 3. Use inverse of addition or subtraction You may not have to do all the steps.

Practice 2.2 Solving Two Step Equations.

Warm up: solve for x x – (-2) = -13. Inverse Operations LEQ: What are inverse operations and how do we use them to solve one step equations?

Solving One-Step Equations Unit 10. To Solve an Equation 1.Isolate the variable – get the letter by itself Inverse Operation 2.Use the Inverse Operation.

Solving Equations By Adding or Subtracting. Key Terms Inverse Operations: –You can use inverse operations to solve equations. –“Undo” each other by performing.

Do Now: Please finish word wall before you start equations

Solve Two-Step Equations. Vocabulary A two-step equation, such as 2x + 3 = 9 has two different operations, multiplication and addition. To solve a two-step.

Warm Up Simplify each expression. 1.10c + c 2. 5m + 2(2m – 7) 11c 9m – 14.

Balancing Equations The student will be able to: solve equations using addition and subtraction.

Solving One and Two Step Equations What is a one – step equation? Examples: 1)3x = 21 2)a/5 = 10 3)5 + b = 12 4)x – 10 = 15 5)6t = 36.

1.4 Solving Equations.

Solving Two- Step Equations

3. 3 Solving Equations Using Addition or Subtraction 3

Solving Two-Step Equations

3-5 More on Solving Equations

Solving for a Specific Variable

Multiplication and Division Equations with Decimals

Solving 2 Step Equations.

Solving Two- Step Equations

Solving Two-Step Equations

Standards: Objectives: Agenda 1.) Lesson 1 – Solving 2 Equations with

Solving Two-Step Equations

ONE STEP EQUATIONS.

ONE STEP EQUATIONS.

Solving Two- Step Equations

Warm-Up 13 x 3 14 x 4 12 x 11 9 x 13.

Objectives: • Students will learn the steps necessary for solving two-step equations.

Warm-Up Solve the system by substitution..

Solving Two-Step Equations

Solving Two-Step Equations

1 Step Equation Practice + - x ÷

Solving Two-Step Equations

Solving Two-Step Equations

Solving One-Step Equations

Objective Solve equations in one variable that contain more than one operation.

Objective Solve equations in one variable that contain variable terms on both sides.

Solving Equations A Step by step approach.

2 Understanding Variables and Solving Equations.

Goal: Solving One step Linear Inequalities.

QQ1 1. Simplify: -2(x + 3) 2. Simplify: 3[(5 + 72) – 20] = -2x - 6

DO now Homework: Lesson 2-1 & 2-2 Practice (page 18 & 21)

1.4 Solving Equations I’ve taught you how to solve equations the “simonized” way but here’s another way of doing the same thing!

Solving Two-Step Equations!!!!

Objective Solve equations in one variable that contain more than one operation.

Solving Equations Finding Your Balance

Objective Solve equations in one variable that contain variable terms on both sides.

Solving Two-Step Equations

Do Now 10/13/11 In your notebook, simplify the expressions below.

Solving Two-Step Equations

Ch. 1.3 Solving Linear Equations

Objective 3.4 solve equations with variables on both sides.

Solving Two-Step Equations

Solving Equations.

Exercise Solve and check x – 3 = 5. x = 8 8 – 3 = 5.

Solving Simple Two-Step Equations

Multi-Step Equations.

ONE STEP EQUATIONS WHAT?!?!.

Solving Two-Step Equations

ONE STEP EQUATIONS.

Solving Equations by 2-1 Adding or Subtracting Warm Up

Solving Two-Step Equations

Bellwork Sept 30 – Oct 4 Solve

ONE STEP EQUATIONS.

Presentation transcript:

Warm – Up Using the “Combining Like Terms ½ sheet”, simplify questions 1-10 EVENS ONLY. 2. 18x 4. 18xy 6. 1.4r + 3 8. 18x + 4y 10. 25w + 3j + 31

Balance x – 2 = 5 x – 2 5

Balance x – 2 = 5 5 x – 2 + 2

Balance x – 2 = 5 x – 2 + 2 5 + 2

Balance x – 2 = 5 x 7 x = 7

Solving equations in one step Goal: Original problem has: Undo it with: Example:

Solving equations in one step Goal: get the variable (letter) by itself. Original problem has: addition subtraction multiplication division Undo it with: subtraction addition division multiplication Example: 214 = y + 112 x – 31 = 14 5x = 20 2• x = 20 2 •2 -112 -112 +31 +31 5 5 102 = y x = 45 x = 4 x = 40

You Try… Solve. 1. 21 = g + 14 2. w – 27 = 67 3. 88 = t + 34 4. I have driven 125 miles of my 320 mile trip to Jacksonville, FL. How many miles do I have to go? ***write a one-step equation to solve.*** G = 7 W = 94 T = 54 X + 125 = 320 , so x = 195 miles