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Mr. DeBruzzi’s Math Class

Mr. DeBruzzi’s Math Class. Four Steps to Solving Equations. 1. ID the variable. 4x + 3 = 2 - 5x. subtracted. multiplied. 2. What’s happening to it?. 4x + 3 = 2 - 5x. 3. How do I UNDO what’s happening?. Add 5x to each side. 4x + 3 = 2 - 5x. + 5x. + 5x. 4. OK -- Do it!.

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Mr. DeBruzzi’s Math Class

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  1. Mr. DeBruzzi’s Math Class Four Steps to Solving Equations

  2. 1. ID the variable 4x + 3 = 2 - 5x

  3. subtracted multiplied 2. What’s happening to it? 4x + 3 = 2 - 5x

  4. 3. How do I UNDO what’s happening? Add 5x to each side 4x + 3 = 2 - 5x + 5x + 5x

  5. 4. OK -- Do it! 4x + 3 = 2 - 5x + 5x + 5x 9x + 3 = 2

  6. 4. OK -- Do it! 9x + 3 = 2 - 3 - 3 9x = - 1

  7. 4. OK -- Do it! 9x = - 1 /9 /9 x = - 1/9

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