$\"\"$

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The expression is $\"\"$ .

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Apply subtraction property of inequality: Subtract 9 from each side.

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$\"\"$

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$\"\"$ (Apply commutative property of addition: $\"\"$ )

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

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$\"\"$ (Apply additive identity property: $\"\"$ )

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

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CHECK:

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The inequality is $\"\"$ , substitute $\"\"$ .

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$\"\"$

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$\"\"$ (Product of two different signs is negative)

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

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The solution is true. $\"\"$

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The solution is $\"\"$ .