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Simplify each of the following equations and solve for . Show all work and check your solution. 

  1. Flip subtraction to addition.                 

    Now you have to choose!

    Add to both sides.                         

    Subtract from both sides.                     

    Flip to positive.                                            

    Add to both sides.                          

    Subtract  from both sides.                     

    Divide by on both sides.

    Check your work! Substitute your answer into the original equation.

  1. See the hints in part (a).