Sherry S. answered • 05/19/16
Tutor
4.9
(89)
Because no one should have to say, "I was never any good at math."
The question is asking you to put all of the variables [the n's] and all of the constants [the numbers] together.
You have
n - 10 + 9n -3
n + 9n go together ... -10 and -3 go together
this is 10n this is -13
So your answer is 10n - 13
