$$ \frac{x+y}{x-y} = \frac{x + 2x}{x - 2x} = \frac{3x}{-x} = -3 $$ The calculated value is $-3$. However, $-3$ is not among the given options. Option B is $3$. It is possible that the question intended to ask for $\frac{x+y}{y-x}$ or the absolute value of the expression. If the expression was $\frac{x+y}{y-x}$, the calculation would be: $$ \frac{x+y}{y-x} = \frac{x + 2x}{2x - x} = \frac{3x}{x} = 3 $$ Given the instruction