1003160803

SubArea: 
Systems of nonlinear equations and inequalities
Level: 
A
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. \[ \begin{aligned} \frac{x+y}x+\frac1{x+y}=1 \\ \frac{2\cdot(x+y)}x-\frac1{x+y}=-7 \end{aligned} \]
\( \left[-\frac16;\frac12\right] \)
\( [-2;3] \)
\( \left[-\frac12;-\frac12\right] \)
\( \left[\frac12;\frac3{-2}\right] \)