Which expression is equivalent to \( -2-7 \) ? \begin{tabular}{|c|}\hline \( 2+7 \) \\ \( -2-(-7) \) \\ \hline\( -2+(-7) \)\end{tabular}

To find an expression equivalent to \( -2 - 7 \), we can rewrite it as \( -2 + (-7) \). This is because subtracting a positive number is the same as adding its negative counterpart. So, \( -2 - 7 = -2 + (-7) \). Additionally, let's look at the other expressions. The first option, \( 2 + 7 \), clearly equals 9 and doesn't match. The second option, \( -2 - (-7) \), simplifies to \( -2 + 7 \), which equals 5 and doesn’t work either. Therefore, the only equivalent expression is \( -2 + (-7) \).