\"\"

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The equation is \"\".

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1 equals what number divided by 231?    (Write the equation as a question)

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The solution is 231.\"\"

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Check whether 231 is a solution.

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\"\"                         (Write the equation)

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\"\"                         (Substitute \"\")

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

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\"\" is the solution of the equation.\"\"

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\"\" is the solution of the equation.

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