Answer:

Step-by-step explanation:

<u>Subtract 6 from both sides of the equation:</u>

<u>Subtract 6 from itself which will give you 0.</u>

<u>Subtract 6 from 15 :</u>

<u>Square both sides of the equation:</u>

<u>Subtract 6 from both sides of the equation:</u>


<u>Subtract 6 from 81:</u>

<u>Divide both sides by -15:</u>


<u>___________________________</u>