Can we repeat the number twice?

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Can we repeat the number twice?

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1hr+5hr+1day=30hr

Then, if the expression is an even number indeed, then the expression or will be odd since every even number is succeeded and preceded by an odd number. Since 30-1 or 30+1 are not even, or will never be 30.

This is impossible as odd numbers + odd numbers = even numbers always.