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7-63.

For each equation below, solve for and check your answer.

  1.  

    Distribute and multiply by .

    Add to both sides.

    Divide both sides by .

  1.  

    Multiply by a common denominator to remove fractions. Refer to part (a) for more help.

  1.  

    Refer to part (b).

  1.  

    Refer to part (a).