\"\"

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The expression is \"\".

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Case 1: If a > b Then

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\"\"

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Multiply each side by negative sign and flip the symbol.

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\"\"

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\"\"                (Product of two same signs is positive)

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Case 2: If \"\"a > b Then

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\"\"

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\"\"                    (Product of two same signs is positive)\"\"

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Solve equation for case 1.

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\"\"

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Apply subtraction property of inequality: Subtract 7 from  each side.

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\"\"

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\"\"                 (Apply additive inverse property: \"\")

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

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Apply division property of inequality: Divide each side by 3.

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\"\"

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\"\"                    (Cancel common terms)

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

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Solve equation for case 2.

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\"\"

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Apply subtraction property of inequality: Subtract 7 from  each side.

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\"\"

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\"\"                     (Apply additive inverse property: \"\")

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

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Apply division property of inequality: Divide each side by 3.

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\"\"

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\"\"                       (Cancel common terms)

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

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Graph the solution set on a number line.\"absolute

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Note: A circle means that this point is not included in the solution set.\"\"

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The solution set is \"\".