\"\"\"\"

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The equation is \"\".

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According to division property of equality: Divide each side by neative 4.

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\"\"

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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 a is \"\".