\"\"

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According to Means-extremes Property of proportion: If \"\", then \"\".

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\"\"                      (Cross products)

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\"\"

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\"\"                         (Multiply: \"\")

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\"\"                             (Distributive property: a (b + c) = ab + ac) \ \

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\"\"

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According to subtraction property of equality; if a = b than a \"\" c = b \"\" c.

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\"\"               (Subtract 4 from each side)

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\"\"                           (Additive inverse property:\"\")

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\"\"                                  (Subtract: \"\")

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\"\"                            (Divide each side by 4)

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\"\"                                  (Cancel common terms)        

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\"\"                                      (Divide: \"\")       

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\"\"

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The value of x is 5.

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