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3-23.

Find the value of that makes each equation below true. 

  1. Subtract from both sides.

  1. Divide both sides by one half (this is equivalent to multiplying by ).

  1. Divide both sides by .

  1. Divide both sides by .

  1. Multiply both sides by .

  1.  (all possible values for )

    Find the square root of both sides. Remember to include both the positive and negative values as you are taking the square root of a variable.