Level:
Project ID:
1003160803
Accepted:
1
Clonable:
0
Easy:
0
Use the substitution method to find the solution \( [x,y] \) of the following system of equations.
\[ \begin{aligned}
\frac{x+y}x+\frac1{x+y}=1 \\
\frac{2\cdot(x+y)}x-\frac1{x+y}=-7
\end{aligned} \]
\( \left[-\frac16,\frac12\right] \)
\( [-2,3] \)
\( \left[-\frac12,-\frac12\right] \)
\( \left[\frac12,\frac3{-2}\right] \)