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11

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PAGE: 247SET: ExercisesPROBLEM: 11
Please look in your text book for this problem Statement

subtraction property of equality

The equation is

Apply subtraction property of inequality: Subtract 18 from each side.

                                     (Additive inverse property: )

                                           (Additive  identity property : )

                                                    (Subtract: ) 

Graph the solution set on a number line

number line diagram inequality_a_less_then_22

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

Check:

To check, substitute 21, a number and less than 22, in .

                                         (Substitute )

                                                   (Add : )

The inequality is true

The inequality solution is .



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