PPT-Solving Systems of Equations Algebraically

Substitution and Elimination Elimination Arrange the equations in STANDARD FORM Your goal is to find a way to eliminate one of the variables so you can solve a onevariable equation . Solve systems of equations by using substitution and elimination.. How to . U. se Substitution. Solve one of the equations for one of the variables.. Isolate one of the variables in one of the equations.. Lesson Objective:. An equation is like a set of scales.. To keep it balanced, whatever you. do to one side you must do to the other.. Use this idea to solve equations like:. 3x + 1 = x + 7 . 2 (3x + 1) = 3 (x – 2). using Elimination. Steps:. 1. Place both equations in Standard Form, A. x . + B. y . = C.. 2. Determine which variable to eliminate with Addition or Subtraction.. 3. Solve for the variable left.. Ch. 3.2. Solving Systems Algebraically. EQ: How can I solve systems algebraically? I will solve systems algebraically. . Bell Work. Without graphing, determine how many solutions, if any, the system has. . Multiplication . Equations. 3-3 Solving . Multiplication . Equations. Solve. Solution. GOAL. Find the value of the variable that makes the. equation TRUE.. The value that makes the equation true.. To isolate the variable (have the variable on one. 21. (. 5-. 6. ). Homework: maintenance sheet 24 & study island . . Due tomorrow!!. Unit Test Friday. Learning Target: Solving systems of equations algebraically . Homework Check 1-8. Part A. If you read from left to right . 10 . “is greater than “ . 5. . X. If you read from right to left . 5. . “is less than “ . 10. . X. If you read from left to right . 5. . “is less than “ . Problem 1. There are 25 toys in a playground. . The toys are either bicycles (2 wheels) or tricycles (3 wheels). . In total in the playground there are 61 wheels. . How many bicycles are in the playground?. Mathematical Language. A . solution. of an equation is a number that make the equation true. 3x+2=17. To . solve. an equation means to find all its solution. Two equations are equivalent if they have the same solutions. Anne Watson. South West, 2012. What is algebra?. What are the pre-algebraic experiences appropriate for . primary children?. Hypothetical ....... ....... but still a valuable exercise. Sources. Draft curriculum. If you read from left to right . 10 . “is greater than “ . 5. . X. If you read from right to left . 5. . “is less than “ . 10. . X. If you read from left to right . 5. . “is less than “ . Solve systems of equations by using substitution and elimination.. How to . U. se Substitution. Solve one of the equations for one of the variables.. Isolate one of the variables in one of the equations.. by . Graphing. Key Terms:. A system of two linear Equations – in ____ variables x and y, consist of two linear equations. . Solution – consist of an order pair_____ .. Two Types:. Consistent – At least one Solution. GCSE: Solving Quadratic Equations Dr J Frost (jfrost@tiffin.kingston.sch.uk) Last modified: 2 nd June 2015 Overview There are 4 ways in which we can solve quadratic equations.   1 By Factorising 2