Add the two fractions with the same denominator.<br><br>
&bull; \( \frac{2}{10} + \frac{3}{10} = \frac{5}{10} = \frac{1}{2} \)<br><br>
Now check each option:<br>
&bull; A: \( 1 - \frac{2}{10} - \frac{3}{10} = \frac{10}{10} - \frac{5}{10} = \frac{5}{10} \) ✓<br>
&bull; B: \( \frac{9}{10} - \frac{5}{10} = \frac{4}{10} \) &#10007;<br>
&bull; C: \( \frac{1}{10} + \frac{6}{10} = \frac{7}{10} \) &#10007;<br>
&bull; D: \( \frac{9}{11} - \frac{9}{11} = 0 \) &#10007;<br><br>
Final Answer: A: \( 1 - \frac{2}{10} - \frac{3}{10} \)