\"\"

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The expression is \"\"                  

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\"\"              (Replace c with 4 in original expression)

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\"\"

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Simplify the expression using order of operations (PEMDAS).

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Since there are no grouping symbols and powers,first operation is multiplication.

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

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\"\"

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First operation is subtraction.

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

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\"\"

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The value of the expression is 2.