Pre-Algebra Solve y + 5 = 13. Solving Equations by Adding or Subtracting Lesson 2-5 Method 1:Method 2: y + 5 = 13 Subtract 5 y + 5 – 5 = 13 – 5from each.

Slides:

Advertisements

Similar presentations

2-2 Solving Two-Step Equations Warm Up Solve each equation x = 112. x – 7 = x = 154. Find a common denominator Possible answer:

Advertisements

Solve an equation with variables on both sides

Solve an equation by combining like terms

Solve an equation using subtraction EXAMPLE 1 Solve x + 7 = 4. x + 7 = 4x + 7 = 4 Write original equation. x + 7 – 7 = 4 – 7 Use subtraction property of.

Standardized Test Practice

Lesson 13.4 Solving Radical Equations. Squaring Both Sides of an Equation If a = b, then a 2 = b 2 Squaring both sides of an equation often introduces.

Learn to solve multi-step equations.

At the Red Valley Sports Camp, 15 kids went horseback riding, 14

At the Red Valley Sports Camp, 15 kids went horseback riding, 14

Solve the equation -3v = -21 Multiply or Divide? 1.

PRE-ALGEBRA. Lesson 2-9 Warm-Up PRE-ALGEBRA “Solving One-Step Inequalities by Adding and Subtracting” (2-9) (3-1) What are “equivalent inequalities”?

PRE-ALGEBRA. Solving Equations by Adding and Subtracting Fractions (5-7)

PRE-ALGEBRA. Lesson 2-5 Warm-Up PRE-ALGEBRA How do you solve an algebraic expression? To solve an algebraic expression, you need to isolate the variable.

Solving Equations by Adding or Subtracting Objective: Solve equations using the addition and subtraction properties of equalities.

Solving Equations by Multiplying or Dividing

Solve an equation by combining like terms EXAMPLE 1 8x – 3x – 10 = 20 Write original equation. 5x – 10 = 20 Combine like terms. 5x – =

Solving Inequalities by Adding or Subtracting

7-1 Solving Two-Step Equations PRE-ALGEBRA LESSON 7-1 Solve each equation. a. 15 = 8 + n n = 7 b. p – 19 = 4 p = 23.

PRE-ALGEBRA. Lesson 7-1 Warm-Up PRE-ALGEBRA What is a two-step equation? How can you use a model to show how to solve a two-step equation? two-step equation:

Solving Equations: The Addition and Multiplication Properties Section 3.2.

Lesson 1-8 Solving Addition and Subtraction Equations.

Lesson 2 Contents Example 1Solve a Two-Step Equation Example 2Solve Two-Step Equations Example 3Solve Two-Step Equations Example 4Equations with Negative.

Solve an equation using addition EXAMPLE 2 Solve x – 12 = 3. Horizontal format Vertical format x– 12 = 3 Write original equation. x – 12 = 3 Add 12 to.

Example 1 Solving Two-Step Equations SOLUTION a. 12x2x + 5 = Write original equation. 112x2x + – = 15 – Subtract 1 from each side. (Subtraction property.

PRE-ALGEBRA. Lesson 2-2 Warm-Up PRE-ALGEBRA The Distributive Property: When multiplying two numbers together, one can calculate the answer by making.

Warm Up Solve. 1. 3x = = z – 100 = w = 98.6 x = 34 y = 225 z = 121 w = 19.5 y 15.

Use the substitution method

Solve Linear Systems by Substitution January 28, 2014 Pages

Holt Algebra Solving Two-Step and Multi-Step Equations Warm Up Solve. 1. What is the goal of solving equations? 2.If 9 – 6x = 45, find the value.

Solving Equations by Adding or Subtracting PRE-ALGEBRA LESSON 2-5 (For help, go to Lesson 2-1.) Simplify each expression – – –

Solve Linear Systems by Substitution Students will solve systems of linear equations by substitution. Students will do assigned homework. Students will.

Holt McDougal Algebra Solving Two-Step and Multi-Step Equations 1-4 Solving Two-Step and Multi-Step Equations Holt Algebra 1 Warm Up Warm Up Lesson.

Holt Algebra Solving Two-Step and Multi-Step Equations Solve equations in one variable that contain more than one operation. Objective.

ALGEBRA TILES SOLVING EQUATIONS Replace the equation with tiles: Negative Positive -X X 1.

Solving Addition and Subtraction Equations Lesson 2.3 and 2.4.

Solve Equations With Variables on Both Sides. Steps to Solve Equations with Variables on Both Sides  1) Do distributive property  2) Combine like terms.

Opener (5 + 6) • 2 a + (b + c) + (d • e) 18k x2 + 5x + 4y + 7

Pre-Algebra Multi-Step Equations With Fractions and Decimals Solve p – 7 = 11. Lesson 7-3 p – 7 = Add 7 to each side.p – = Simplify.

Solving Two-Step and Multi-Step Equations Warm Up Lesson Presentation

Solving Equations With Fractions

Solve a quadratic equation

Solving Two-Step and 1-4 Multi-Step Equations Warm Up

Solving Two-Step and 1-4 Multi-Step Equations Warm Up

Solving 1-Step Integer Equations

Solving Two-Step Inequalities

Solving One-Step Equations

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

Objectives Use the Commutative, Associative, and Distributive Properties to simplify expressions.

Equations: Multi-Step Examples ..

2 Understanding Variables and Solving Equations.

Solving Multi-Step Equations

Simplifying Algebraic Expressions

Learn to solve equations with integers.

Solving Inequalities by Adding or Subtracting

Solving One Step Equations

Solving Inequalities Using Addition and Subtraction

Using the Properties Together

Multiplying and Dividing Rational Numbers

Objective Solve inequalities that contain variable terms on both sides.

Solving 1-Step Integer Equations

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

Solving Multi-Step Equations

ONE STEP EQUATIONS Addition and Subtraction

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

Solving Multi-Step Equations

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

Objectives Use the Commutative, Associative, and Distributive Properties to simplify expressions.

Multiplying and Dividing Rational Numbers

Presentation transcript:

Pre-Algebra Solve y + 5 = 13. Solving Equations by Adding or Subtracting Lesson 2-5 Method 1:Method 2: y + 5 = 13 Subtract 5 y + 5 – 5 = 13 – 5from each side. y = 8Simplify. y + 5 = 13 y = 8 Check: y + 5 = Replace y with = 13 – 5 = – 5 Additional Examples

Pre-Algebra Larissa wants to increase the number of books in her collection to 327 books. She has 250 books now. Find the number of books she needs to buy. Solving Equations by Adding or Subtracting Lesson 2-5 target numberWordsplusis250number to buy =number to buy.xLet Equation 327+x250= Additional Examples

Pre-Algebra (continued) Solving Equations by Adding or Subtracting Lesson = x Larissa needs to buy 77 more books. 327 = x + 250Use the Commutative Property of Addition. 327 – 250 = x – 250Subtract 250 from each side. 77 = x Simplify. Check: Is the answer reasonable? 250 plus the number of books bought should be a total collection of = 327 Additional Examples

Pre-Algebra Solve c – 23 = – 40. Solving Equations by Adding or Subtracting Lesson 2-5 c – 23 = – 40 c – = – Add 23 to each side. c = –17Simplify. Additional Examples

Pre-Algebra Marcy’s CD player cost $115 less than her DVD player. Her CD player cost $78. How much did her DVD player cost? Solving Equations by Adding or Subtracting Lesson = t – 115Write an equation = t – Add 115 to each side. 193 = tSimplify. Marcy’s DVD player cost $193. cost of CD player$115cost of DVD playerWordsless thanwas t=cost of the DVD player.Let t 115 Equation78=– Additional Examples