To solve the expression \( 17 - (-18) \), we can simplify it as follows:
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The negative sign in front of the parentheses indicates that we are subtracting the negative number, which is equivalent to adding the positive number.
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Therefore, the expression becomes: \[ 17 + 18 \]
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Now, we just need to add the numbers: \[ 17 + 18 = 35 \]
So, \( 17 - (-18) = 35 \).