I believe the answer is x⁢10 if it’s incorrect i’m so sorry
First you had to remove parenthesis first.

Multiply by the numbers.

Final answer 



Hope this helps!
And thank you for posting your question at here on brainly, and have a great day.
-Charlie
Quotient is the correct answer
Step-by-step explanation:
Isolate the variable
10x - 7x = -20 - 8
3x = -28
x = -9.333333333333