\"\"

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The expression is \"\".

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Try with some positive values and check whether the equation is true.

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Substitute any positive value for \"\":  say 1.

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\"\"\"\"

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Compare the equation, the equation is true for \"\".\"\"

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Substitute any other positive value for \"\": say 2.

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\"\"\"\"

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Compare the equation, the equation is true for \"\".

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The given equation is true for any positive value of \"\".  \"\"

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Try with some negative values and check whether the equation is true.

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Substitute any negative value for \"\": say \"\"1.

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\"\"\"\"

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Compare the equation, the equation is true for \"\".\"\"

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Substitute any other positive value for \"\": say \"\".\"\"\"\"

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Compare the equation, the equation is true for \"\".

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The given equation is true for any negative value of \"\".  \"\"

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Substitute \"\". \"\"

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\"\"\"\"                   (Simplify).

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Compare the equation, the equation is true for \"\".

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The given equation is true only when \"\".\"\"

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The equation is representing additive identity property. i.e \"\".

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The equation is always true.\"\"

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The equation is always true.