\"\"

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The equation is \"\".

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According to division property of equality:

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For any number a, b and c, If a = b then \"\".

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\"\"                  (Divide each side by - 7)

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\"\"                         (Cancel common terms)

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

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Check:

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To check the solution, substitute \"\" in original equation.           

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\"\"

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

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Compare the values, the equation is true. \"\"

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The value of \"\".