6.4 Elimination Using Multiplication

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6.4 Elimination Using Multiplication

• Objective Solve systems of equations by using
  elimination with multiplication

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How can we solve a system of equation

1. By Graphing
2. By Substitution
3. By Elimination (Adding or Subtracting)

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A 4th way we can solve systems of equations is by
Elimination using multiplication
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Steps to Solving by Elimination with
Multiplication- Step 1

• Multiply at least one equation by a constant to
  get two equations that contain opposite terms

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Solving by Elimination with Multiplication- Step 2

• Follow steps for Elimination

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Example 1- Use elimination to solve the system of
equations

• 5x 6y -8
• 2x 3y -5

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Example 2- You Try

• 4x 2y 10
• 12x 7y -19

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Use elimination to solve the system of equations

• 4x 2y 8
• 3x 3y 9

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Use elimination to solve the system of equations

• 5x 3y 6
• 2x 5y -10

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Use elimination to solve the system of equations-
You Try

• 6a 2b 2
• 4a 3b 8

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Homework

• Page 358 7 27 odd