Practice problem
The system {2y−x=63x−y=7\left \{ \begin{matrix}2y-x=6\\ 3x-y=7\end{matrix} \right.{2y−x=63x−y=7 has a single solution (x1,y1)(x_1,y_1)(x1,y1). Find x1+y1x_1+y_1x1+y1.
444
555
999
141414
Type a concept, like “slope” or “photosynthesis”.
