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 \"\"    

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The expression is\"\" .

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  \"\"                         (Rewrite 1.99 as difference of 2 and 0.1)

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According to Distributive property: \"\"

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       \"\"               (Distribute 2)

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\"\"

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

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

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\"\"

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The value of given expression is 3.98.