\"\"\"\"

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The equation is \"\"

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\"\"       (Distributive property: , a (b - c) = ab - ac) \"\"             (Multiply:\"\")

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\"\"                     (Product of two opposite signs is negative)

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

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\"\"        (Subtract 12f from each side)

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\"\"

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All real numbers are solutions  because \"\" is true. \"\"

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The equality solution is \"\".