\"\"

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The equation is \"\".

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\"\" equals to what number minus \"\"?      (Write the equation as a question)

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The solution is 5.\"\"

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Check whether 5 is a solution.

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\"\"                     (Write the equation)

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\"\"                    (Substitute \"\")

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

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

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\"\" is the solution of the equation.