To simplify the expression \((3x+12)+(7x-5)\), we can follow these steps:
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Remove the parentheses: \[ 3x + 12 + 7x - 5 \]
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Combine like terms (the \(x\) terms and the constant terms):
- For the \(x\) terms: \(3x + 7x = 10x\)
- For the constant terms: \(12 - 5 = 7\)
Putting it all together, we have: \[ 10x + 7 \]
Therefore, none of the provided options: A. \(10x + 17\), B. \(15x - 2\), C. \(22x -\) match the simplified expression \(10x + 7\). Please check the options again as there may be an error.