Both students made a mistake.
1 answer:
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<h3>Answer:</h3>
In this question, we're simply combining "like-terms" in order to simplify the expression.
Lets solve:
When you're done solving, you should get -17x-21
This means that -17x-21 would be the simplified version.
<h3>I hope this helped you out.</h3><h3>Good luck on your academics.</h3><h3>Have a fantastic day!</h3>