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Aim: How do we formally solve two-step equations?

4x ̶ 5 = 23 +5 +5 4x = 28 4 4 x = 7. Steps: 1) Eliminate “Loose Stuff” (undo addition or subtraction) 2) Undo multiplication or division 3) Write Solution. Aim: How do we formally solve two-step equations?.

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Aim: How do we formally solve two-step equations?

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  1. 4x ̶ 5 = 23 +5 +5 4x = 28 4 4 x = 7 Steps: 1) Eliminate “Loose Stuff” (undo addition or subtraction) 2) Undo multiplication or division 3) Write Solution Aim: How do we formally solve two-step equations? Remember: Whatever you do to one side of the equal sign, you must do to the other Remember: Whatever you do to one side of the equal sign, you must do to the other

  2. Check: 4x ̶ 5 = 23 4 • 7 ̶ 5 = 23 28̶ 5 = 23 23 = 23 Steps: 1) Rewrite equation 2) Substitute solution in for variable 3) Simplify

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