$\"\"$

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The expression is 17 $\"\"$ 9. \ \

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$\"\"$ (Write 9 as the difference of 10 and 1)

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$\"\"$ (Distributive property: a(b + c) = ab + bc)

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

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

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The value of expression is 153.

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