\"subtraction\"\"

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The equality is \"\"

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Apply Subtraction property of inequality: Subtract from 3d each side.

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\"\"

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\"\"

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

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

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\"\"                           (Sustract:\"\")

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Apply Addition property of inequality: Add to 13 each side.

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\"\"         

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

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

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\"\"                                            (Add:\"\")

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\"\"                                       (Divide each side by 4)

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\"\"                                             (Cancel common terms )

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

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Graph the solution set o n a number line \"\"

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Check:

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To check, substitute 7.5, in \"\".

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\"\"

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

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\"\"                                       (Add:\"\")

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\"\"

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The equality solution is \"\".