<u><em>Answer: -7. *The answer must be have negative sign.*</em></u>
<u><em>Explanation: </em></u>
<u><em>First, do remove parenthesis first.</em></u>

<u><em>Then, add/subtract by the numbers.</em></u>

<u><em>A zero pair is when one positive integer tile is paired with one negative integer tile and the value is 0. </em></u>
<em><u>Example: (-1)+1=0</u></em>
l6l=6
l-8l=8
7+(-7)=0
<u><em>Opposites have the same absolute value.</em></u>
<u><em>Hope this helps!</em></u>
<u><em>Thanks!</em></u>
<u><em>Have a great day!</em></u>