Variables and Equations

Slides:

Advertisements

Similar presentations

Equations and Their Solutions

Advertisements

S.Gast MIS Fall Solving Variable Equations A lesson by Mrs. Gast.

Vocabulary Chapter 6.

1.8 INTRODUCTION TO EQUATIONS I can solve equations using tables and mental math.

SOLVING EQUATIONS BY ADDING

1-8 An Introduction to Equations

Variables and Equations Pre-Algebra. Learning Objective I can solve equations with variables.

Lesson 2.4 Variables and Equations. Types of equations An equation is a mathematical sentence with an equal sign.

1.4 Solving Equations ●A variable is a letter which represents an unknown number. Any letter can be used as a variable. ●An algebraic expression contains.

Open Sentences.

1-8 An Introduction to Equations. Vocabulary Equation: A mathematical sentence that uses an equal sign. Open Sentence: An equation is an open sentence.

Equations Reducible to Quadratic

TABLES AND VALUES Section 1.5. Open Sentence Equation.

Pg #14-40e, Equations and Inequalities Equation = formed when an equal sign (=) is placed between two expressions creating a left and.

Equations and Inequalities. Equation – A sentence stating that two qualities are equal. Includes a variable – 3x + 5 = 17 Equation variable The solution.

Evaluating Algebraic Expressions 1-7 Solving Equations by Adding or Subtracting Preparation for AF4.0 Students solve simple linear equations and inequalities.

Algebra Equations Lesson 1-7 Pages Equations An Equation is a sentence that contains an equals = sign. The equals = sign tells you that the expression.

To Start:  Simplify the following:  6(a + 10) =  -2(y – 2) =  (5 + w)5 = 6a y w.

Inequalities. SymbolMeaning Greater Than =Equal Greater Than or Equal To.

1.3 Open Sentences A mathematical statement with one or more variables is called an open sentence. An open sentence is neither true nor false until the.

Lesson 1.4 Equations and Inequalities Goal: To learn how to solve equations and check solutions of equations and inequalities.

Lesson 1-8 Solving Addition and Subtraction Equations.

1-5 Open Sentences Objective: To solve open sentences by performing arithmetic operations.

Equations Students will be able to solve equations using mental math, or guess and check.

Equations and Inequalities. Equation – A sentence stating that two qualities are equal. Includes a variable – 3x + 5 = 17 Equation variable The solution.

Equations and Solutions Core Focus on Introductory Algebra Lesson 3.1.

Using Number Sense to Solve One-Step Equations Lesson 2-5.

1.7 Intro to Solving Equations Objective(s): 1.) to determine whether an equation is true, false, or open 2.)to find solutions sets of an equation 3.)to.

Miss Tilton.  Equation: a math sentence with an equal sign  7x = – 35  Solution: a value for a variable that makes an equation true.  7x = – 35 

Identities, Contradictions and Conditional Equations.

2( ) 8x + 14y = 4 -12x – 14y = x = x = 4 8x + 14y = 4 8(4) + 14y = y = y = -28 ___ ___ y = -2 The solution is (4, -2)

Equations and Inequalities. Unit 8 – Solving Inequalities.

Using Number Sense to Solve One-Step Equations

Checking Possible Solutions

Addition and Subtraction

Using Number Sense to Solve One-Step Equations

Multiplication and Division

1-5 Equations Goals: Solve equations with one variable

1.4 – Writing Equations and Inequalities

Solving Equations by Factoring and Problem Solving

Solving Algebraic Equations

One-Step Equations with Addition and Subtraction

What is an equation? An equation is a mathematical statement that two expressions are equal. For example, = 7 is an equation. Note: An equation.

EQ: How do I solve an equation in one variable?

Section 1-3 Equations.

2 Understanding Variables and Solving Equations.

Equation- a math sentence with an equal sign.

3-1 Inequalities and their Graphs

Exercise 2x − 3 = 9 x = 6.

Exercise Simplify − 7 5.

Open Sentences.

Warm Up Solve. 1. 2x + 9x – 3x + 8 = –4 = 6x + 22 – 4x 3. + = 5

1.4 – Writing Equations and Inequalities

1-8 An Introduction to Equations

Solving 1-Step Integer Equations

SECTION 2-4 : SOLVING EQUATIONS WITH THE VARIABLE ON BOTH SIDES

Section 2.4 Variables and Equations

Solving One-Step Equations

ONE STEP EQUATIONS Addition and Subtraction

Do Now Evaluate 9h + h if h = 2.1 Evaluate 2 (4 + g) 2 If g = 6.

Unit 4. Day 13..

Objective Translate verbal sentences into equations and inequalities.

Algebraic Expression A number sentence without an equal sign. It will have at least two terms and one operations.

Unit 8 – Systems of Equations.

Course 2: Inequalities Objectives:

Algebra 1 Section 2.4.

Algebra: Variables and Expressions

To Start – 10 Points!! Simplify the following:

Does that Equal? MGE1.OA.7 Ms. Brown - Math.

Presentation transcript:

Variables and Equations

An equation is a mathematical sentence with an equal sign An equation is a mathematical sentence with an equal sign. It can be true, false or an open sentence examples: 6 + 12 = 18 TRUE because 18 = 18 8 + 16 = 20 FALSE because 24 ≠ 20 5b + 7 = 34 OPEN because b can stand for any value

Determine if the following are true, false or open sentence: 27 +12 = 29 (6 - 3) – 1 = 3 x + 14 = 30 15 + 9 = 25 23 – 7 = 16 3x + 20 = 48

A solution of an equation is a value of the variable that makes the equation true example: Is 30 a solution of the equation 170 + x = 200 170 + x = 200 170 + 30 = 200 Yes, 30 is a 200 = 200 solution 200 = 200

Check if the given number is a solution of the equation 20 – c = 12 c = 8 a + 5 = 3 a = - 2 2y + 3 = 7 y = 3 5p – 1 = - 1 p = 0 m + 29 = 24 m = - 4