\"\"\"\"

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The inequality is \"\".

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Apply subtraction property of inequality: Subtract 13 to each side.

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\"\"

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\"\"     (Comutative property:\"\")

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

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\"\"                   (Additive identity property: \"\")\"\"

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

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\"\"                    (Divide each side by 3)

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\"\"                         (Cancel common terms)

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

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\"\"                (Multiply each side by negative one and flip the symbol)

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\"\"

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Graph the solution set on a number line

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\"number

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

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Check:

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To check, substitute a number greater than 7 in \"\".

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\"\"                 (Substitute: n = 8)

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

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

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The  inequality is true. \"\"

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The inequality solution set is \"\".