Answer: The answer is -4/5 hope this helps :D
When multiplying two equations like this, you need to distribute. Distribute each term to get <span><span><span><span><span><span>3<span>x</span></span></span></span></span></span></span>

<span><span><span><span><span>+ <span>3</span></span></span></span></span></span>

<span><span><span><span>− <span>26</span></span></span></span></span>

<span><span><span>−<span>14</span></span></span></span>

<span><span>−<span>15</span></span></span>

<span>−<span>24x</span></span>+<span>3</span>
<span>Mixed numbers from 6 to 7 with an interval of 1/5 between each pair of mixed numbers are {6 1/5, 6 2/5, 6 3/5, 6 4/5}</span>
C is what I think/Know for sure