\"\"\"\"

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Given equation is \"\".

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According to multiplication property of equality: if \"\", then \"\".

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\"\"              (Multiply each side by 3)

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\"\"                    (Cancel common terms)

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

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\"\"           (Subtract a from each side) 

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

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The solution is \"\".