Suppose that x and y are real numbers that satisfy the two equations:
\begin{aligned}
x^2+3 x y+y^2 & =909 \\
3 x^2+x y+3 y^2 & =1287
\end{aligned}
What is a possible value for x+y ?
Answer Choices
A. 27
B. 39
C. 29
D. 92
E. 41
Suppose that x and y are real numbers that satisfy the two equations:
What is a possible value for x+y ?
Answer Choices
A. 27
B. 39
C. 29
D. 92
E. 41