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9-4 Addition or Subtraction Method

9-4 Addition or Subtraction Method. Objective: Use addition or subtraction method to solve systems of equation. 9-4 Addition or Subtraction Method. Example 1: Want to eliminate one variable by addition or subtraction Solve : 5x – y = 12 3x + y = 4  .

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9-4 Addition or Subtraction Method

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  1. 9-4 Addition or Subtraction Method Objective: Use addition or subtraction method to solve systems of equation.

  2. 9-4 Addition or Subtraction Method • Example 1: Want to eliminate one variable by addition or subtraction • Solve : 5x – y = 12 • 3x + y = 4 

  3. 9-4 Addition or Subtraction Method • Example 2: Want to eliminate one variable by addition or subtraction • Solve : 6c + 7d = -15 • 6c - 2d = 12 

  4. 9-4 Addition or Subtraction Method • P. 427 1 – 25 odds

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