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Transparency 2. Click the mouse button or press the Space Bar to display the answers. Splash Screen. Example 2-2c. Objective. Solve addition equations. Example 2-2c. Vocabulary. Inverse operations. Operations which undo each other add/subtract Multiply/divide. Example 2-2c.

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  1. Transparency 2 Click the mouse button or press the Space Bar to display the answers.

  2. Splash Screen

  3. Example 2-2c Objective Solve addition equations

  4. Example 2-2c Vocabulary Inverse operations Operations which undo each other add/subtract Multiply/divide

  5. Example 2-2c Vocabulary Solve Find the value of the variable that results in a true sentence

  6. Lesson 2 Contents Example 1Solve an Equation by Subtracting Example 2Solve an Equation Using Zero Pairs

  7. Example 2-1a Write the equation. Ask “what is being done to the variable?” The variable is being added by 4 - 4 - 4 = 5 x + 4 Do the inverse on each side to “undo the addition Bring down x + 4 Subtract 4 Bring down = 5 Subtract 4 1/2

  8. Example 2-1a Bring down x Combine “like” terms Bring down = Combine “like” terms - 4 - 4 = 5 x + 4 Use the Identity Property of Addition to add x + 0 x 1 = + 0 Answer: x = 1 1/2

  9. Example 2-1c Answer: 1/2

  10. Example 2-2a Write the equation. Ask “what is being done to the variable?” The variable is being added by 11 - 11 = 7 - 11 x +11 Do the inverse on each side to “undo the addition Bring down x + 11 Subtract -11 Bring down = 7 Subtract -11 2/2

  11. Example 2-2a Bring down x Combine “like” terms Bring down = - 11 - 11 x + 11 = 7 Combine “like” terms = -4 x + 0 Use the Identity Property of Addition to add x + 0 x = -4 Answer: 2/2

  12. Example 2-2c * Answer: x = –6 2/2

  13. End of Lesson 2 Assignment

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