\"\"

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The expression is \"\".

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\"\"                              (Write percent as fraction)

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\"\"                              (Substitute \"\")

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\"\"                        (Divide each side by 20)

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\"\"                                   (Divide: \"\")

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

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\"\"                                            (Divide: \"\")\"\"

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The value of \"\" is 18.