PRE-ALGEBRA, 2012
41

 PAGE: 254 SET: Exercises PROBLEM: 41

The inequality is .

(Distributive property:)

(Divide:)

(Commutative property:)

Apply subtraction property of inequality:Subtract 8 from each side.

(Commutative property:)

(Subtract: )

(Divide each side by 2)

(Cancel common terms)

(Multiply:)

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

(Product of two same signs is positive sign)

Graph the solution set on a number line

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

Check:

To Check, substitute a number greater than 8 in

(Substitute )

(Distributive property:)

(Divide:,)

The inequality is true.

The inequality solution set is .

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