\"\"\"\"

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The expression is \"\".

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According to division property of equality: Divide each side by 4.5.

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\"\"

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\"\"                          (Cancel common terms)

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\"\"                  (Multiply numarator and denominator by 10)

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

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

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The value of expression is \"\".