\"\"

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Since JKMN is a rectangle, opposite sides are congruent.

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\"\"                                 (Opposite angles are congruent)

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\"\"                                 (Definition of congruent segments)

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\"\"                    (Substitute \"\")

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\"\"                 (Subtract 8x from each side)

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\"\"                     (Add 14 to each side)

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\"\"                  (Write the factors)

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\"\"      (Zero product property)

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\"\"           (Simplify)\"\"

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Use \"\" to determine the measure of JK.

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If \"\".

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\"\"                          (Given)

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\"\"                       (Substitute \"\")

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\"\"                                (Simplify)\"\"

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If \"\".

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\"\"                          (Given)

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\"\"                       (Substitute \"\")

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\"\"                                (Simplify)\"\"

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The measure of JK is 26 or 10.

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