Can you send a picture of the triangle. Maybe take a screen shot?
Answer:
-9x - y
Step-by-step explanation:
Combine like terms. That is, combine all the x terms and then, separately, combine all the y terms.
2x - 10y + 9y - 11x = -9x - y (answer)
ANSWER: 3.3370212766 all you do is put it in a calculator