To subtract \((h+k) - (2k - h)\), we can use the properties of operations to simplify the expression step by step.
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Distribute the negative sign across the second group: \[ (h + k) - (2k - h) = (h + k) - 2k + h \]
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Now, combine like terms:
- Combine the \(h\) terms: \(h + h = 2h\)
- Combine the \(k\) terms: \(k - 2k = -k\)
So, we get: \[ 2h - k \]
Thus, the simplified expression is: \[ \boxed{2h - k} \]