Hello there! :)
Answer:

<em><u>*THE ANSWER MUST HAVE A POSITIVE SIGN!*</u></em>
Step-by-step explanation:
First, you subtract by 8 from both sides of an equation.

Then, you subtract by the numbers from left/right.

, <em>is the CORRECT/FINAL ANSWER!</em>
<em>Hope this helps you!</em>
<em>Have a nice day! :)</em>
<em>:D</em>
<em>-Charlie</em>
<em>Thanks!</em>